Moment of a Force | Mechanics Statics | (Learn to solve any question)

Learn about moments or torque, how to find it when a force is applied at a point, 3D problems and more with animated examples. We talk about the line of action, breaking forces into components and using that to find moments, and resultant moments. We also go into using the cross product to figure out the moment as well.
🔹Breaking 2D forces into components: • Vector Addition of Cop...
🔹Forces Along a Line (3D forces): • Force Vectors Along a ...
🔹Finding the Cross product: • How to Solve a Scalar ...
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Intro(00:00)
Determine the moment of each of the three forces about point A. (02:24)
The 70-N force acts on the end of the pipe at B. (04:30)
The curved rod lies in the x-y plane and has a radius of 3 m. (05:25)
Determine the moment of this force about point A. (06:28)
Determine the resultant moment produced by forces (06:58)
Find more at www.questionsolutions.com
Book used: R. C. Hibbeler and K. B. Yap, Engineering Mechanics Statics.
Hoboken: Pearson, 2017.

Пікірлер: 513

  • @QuestionSolutions
    @QuestionSolutions2 жыл бұрын

    ⭐⭐If you'd like to see more examples covered and at the same time support the channel, please see: kzread.info/dash/bejne/oISqqZObianIm9I.html ⭐⭐ 🔹Clockwise moments positive, or counter-clockwise positive? kzread.infoP029mqnp4XY 🔹Please note there is a typo at 6:23. The "k" term is negative, not positive, so it's {-128.34i + 128.34j - 256.68k} 🔹At 6:31, there is a typo in the question, we are finding the moment about point B, NOT A. This is a typo in the question only, all steps are correct. 🔹When to use sine or cosine: kzread.infovynnKlJD_Jo

  • @moonbunnies5216

    @moonbunnies5216

    2 жыл бұрын

    Hi sorry for bothering. For the j term in the same timestamp you've provided, I can't seem to get positive j. 4(-42.78)-(-2)(21.39) = -128.34

  • @moonbunnies5216

    @moonbunnies5216

    2 жыл бұрын

    btw thank you so much for these videos. Its really helping me a lot you have no idea how thankful I am to have found this channel.

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    @@moonbunnies5216 Since this is the second multiplication, it will have a negative in front first, so it will be like this: -[4(-42.78)-(-2)(21.39)]. You can always double check using this website: onlinemschool.com/math/assistance/vector/multiply1/ . Simply plug in the 2 vectors. And you are very welcome, glad to hear these videos are helping :)

  • @moonbunnies5216

    @moonbunnies5216

    2 жыл бұрын

    @@QuestionSolutions oh my god I totally forgot about the formula for that, should've checked myself before commenting, thank you so so soo much for letting me know.

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    @@moonbunnies5216 Happens to everyone I think :) Best wishes on your studies!

  • @alienx097
    @alienx0972 жыл бұрын

    Completing my Engineering from KZread University of Engineering and Technology

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Best wishes with your studies!

  • @divineobot1605

    @divineobot1605

    8 ай бұрын

    For realll😂😂😂😂❤

  • @aadhilhasan7815

    @aadhilhasan7815

    6 ай бұрын

    Best KZread professor😊 thanks a lot

  • @user-dh9ry2hj5z

    @user-dh9ry2hj5z

    6 ай бұрын

    Same condition same place 😂

  • @user-ro8gk9tf2k

    @user-ro8gk9tf2k

    4 ай бұрын

    Which engineering program?

  • @1Katula
    @1Katula3 жыл бұрын

    well I'm obviously subscribing. I have been struggling with this topic for a while and your video just helped me get it. 1 step closer to becoming an engineer thank you : )

  • @QuestionSolutions

    @QuestionSolutions

    3 жыл бұрын

    That's really awesome and I am super glad you got it :) Thank you so much and I wish you the best on your journey to become an awesome engineer!

  • @j.d.b.7581

    @j.d.b.7581

    Жыл бұрын

    Same here✨

  • @ivoryas1696

    @ivoryas1696

    3 ай бұрын

    @@QuestionSolutions Awesome. Thanks dude. 👌🏾

  • @adinadjiressem6669

    @adinadjiressem6669

    27 күн бұрын

    @@QuestionSolutions Very Smart

  • @zoelogan1841
    @zoelogan18412 жыл бұрын

    Thank gosh I found you! I was struggling so much with moments and now I know it's the PERPENDICULAR distance. Thank you so much :)

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Haha, yes, perpendicular distance :) Glad to hear this helped!

  • @BigSmokeEnthusiast
    @BigSmokeEnthusiast Жыл бұрын

    Your honestly one of two best tutoring channels for physics in all of YT. Continue making quality vids bro!! (also new sub)

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Thank you so much for your kind words! Really nice of you :) I will do my best to continue the channel.

  • @brownbearedurardo
    @brownbearedurardo2 жыл бұрын

    I am here just for the recap since most of the engineering lessons I took required this procedure to solve problems. Thank you! You discussed better than my college instructor. Specific and concise!!!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    I try my best to make them as concise as possible :) Best wishes with your finals!

  • @Eng.ZeinYassin
    @Eng.ZeinYassin5 ай бұрын

    May God bless you, your family, and your knowledge that you spread. You have made me understand, so I ask God Almighty to increase you and bless the goodness in you and increase you. Syria🇸🇾🥇

  • @QuestionSolutions

    @QuestionSolutions

    5 ай бұрын

    Wow, thank you very much, that was a really nice comment. I wish you the best in your studies and all your future endeavors!

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    @kidusteshome84403 ай бұрын

    you explained the whole topic and worked all possible types of problems related to this topic in just 8mins! you're amazing!

  • @QuestionSolutions

    @QuestionSolutions

    3 ай бұрын

    Thank you very much!

  • @danconte954
    @danconte9542 жыл бұрын

    You deserve my subscribe! I hope all students trying to learn this lesson would see this video. Thanks for the tutorial. Keep it up.

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you very much! :)

  • @bigiron4018
    @bigiron40182 жыл бұрын

    Awesome, so helpful. I was having trouble with this topic, watched the video, worked some practice stuff out on paper and cruised through the rest of my homework on this subject. Thank you!!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    You're very welcome. You're doing exactly what I hoped students would do :)

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    @RedSarGaming2 жыл бұрын

    Coming from a class with a curriculum that doesn't follow the book to the T, this is such a great way to get study/example problems. THANK YOU SO MUCH!!!!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    You are very welcome! I hope you gain a firm grasp of the materials and do amazingly on your exams!

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    @nicerice96892 жыл бұрын

    You are doing god's work my man, bless your soul holyyyyyy, Keep doing what you're doing man

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Many thanks! I wish you the best on your studies.

  • @sbarz106
    @sbarz1062 жыл бұрын

    Thank you so much you've saved me, in just minutes you managed to explain better than hours of lectures!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    I am really glad to hear that :) Best wishes with your studies!

  • @Tay7r

    @Tay7r

    Жыл бұрын

    Same bruh, my professors can't teach shit

  • @sadhananarendar2992
    @sadhananarendar29922 жыл бұрын

    Excellent explanation. Thank you very much. Very well explained. The best part is explaining the solution really fast and also clearly.

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you so much for your nice comment. I really appreciate it.

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    @ummiaisyah75602 жыл бұрын

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  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you for your kind comment and I am very happy to hear that these videos help. Keep up the awesome job and I wish you the best with your studies! :)

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    @ummiaisyah7560

    2 жыл бұрын

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    @QuestionSolutions

    2 жыл бұрын

    @@ummiaisyah7560 You're very welcome!

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    @randomname13922 жыл бұрын

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  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you so much, really glad to hear it was helpful! Keep up the awesome work.

  • @cr7kambole422
    @cr7kambole4222 жыл бұрын

    I have been struggling with this chapter in Applied Mathematics, Thank you very much, now i trust myself fully in Moments, i also subscribed to your channel and sent the link to my fellow varsity mates

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    I am really happy to hear that and I really appreciate your subscription and the share. Means a lot and I wish you the absolute best with your future studies! Keep up the good work 👍

  • @nobodywillsner1063
    @nobodywillsner1063 Жыл бұрын

    Thank you! Been sitting in class not understands a thing and saw this video and now i get it.

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Glad it helped! Best wishes with your studies.

  • @BilboBagends
    @BilboBagends2 жыл бұрын

    BIG UP MY MAN QUESTION SOLUTIONS!! Thank you for putting these together!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Many thanks!! 👍👍

  • @pimientopicante3870
    @pimientopicante38702 жыл бұрын

    Thnx so much for explaining it! I had mix feelings about this topic since my professor went over it fast

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    I hope it was helpful to you. Best wishes with your studies!

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    @vincentadams6862 жыл бұрын

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  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

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    @patrick-mn6du Жыл бұрын

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  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Thank you very much! :)

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    @muhammedyamenabdulhadi88402 жыл бұрын

    thanks for the awesome explanation methods you just made the subject extremely easier

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    I am really glad to hear that! Best wishes with your studies.

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    @easymoney73443 жыл бұрын

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  • @QuestionSolutions

    @QuestionSolutions

    3 жыл бұрын

    Thank you so much 💓 I really appreciate your comment and the shares, super nice of you! 💓💓💓💓

  • @blans316
    @blans3162 жыл бұрын

    Your videos are so amazing, thank you!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you for your kind comment! I hope they are very helpful to you.

  • @janecm6136
    @janecm61366 күн бұрын

    Thank you. I think I get it now. I’ve been stressing and struggling summation of forces and moments. I think I finally got the principle. It’s just that the figure is overwhelming me but I think I’m almost at it now. I’m definitely subscribing ❤

  • @QuestionSolutions

    @QuestionSolutions

    6 күн бұрын

    Thank you very much. I am sure you will get it, just practice a few problems and follow along the examples :) I wish you the absolute best with your studies!

  • @justinbailes9576
    @justinbailes95768 ай бұрын

    been lost for so long dropped the class once already and watched this video and now everything makes sense

  • @QuestionSolutions

    @QuestionSolutions

    8 ай бұрын

    I’m really glad to hear that the video was helpful for you! It’s not uncommon to feel lost when learning something new, and it’s great that you didn’t give up. Do you best, keep going, you’re doing great! 😊

  • @jesustheodore5126
    @jesustheodore51262 жыл бұрын

    Thank you so much, Great Video! it was very helpful for my statics exam!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    I am very glad to hear that :) I hope you did well on your exam.

  • @koala1084
    @koala10842 жыл бұрын

    Gorgeous explanation, thank you!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    You're very welcome!

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    @abillejadzrich55512 жыл бұрын

    i love the way of ur teaching where u focus on concept

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Glad to hear :) Best wishes with your studies!

  • @A1M2099
    @A1M20993 жыл бұрын

    5x faster than my prof.

  • @QuestionSolutions

    @QuestionSolutions

    3 жыл бұрын

    👍😁

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    @aaqibkhursheed9523

    3 жыл бұрын

    And its easier to understand 😃😂

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    @d7o0myalshlaly59

    Жыл бұрын

    5x better

  • @trevorclark7985

    @trevorclark7985

    Жыл бұрын

    honestly, my professor makes this stuff seem like rocket science with how bad he is at teaching it

  • @fish9008
    @fish90082 жыл бұрын

    Dude, just... Thank you so much, you don't know how much you saved me, Thank you.

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    You're very welcome! Keep up the great work, best wishes with your studies.

  • @GurbetciAri
    @GurbetciAri7 ай бұрын

    Great examples, thanks!

  • @QuestionSolutions

    @QuestionSolutions

    7 ай бұрын

    Glad it was helpful!

  • @kaankaraman9850
    @kaankaraman9850 Жыл бұрын

    You ara amazing man. I loved it. I was struggling but now i know what to do

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    I am glad to hear that! Keep up the good work.

  • @kiran4456
    @kiran44562 жыл бұрын

    Great explainations 👏, hope for more videos 👍

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Awesome :) Thank you so much! 👍👍👍👍

  • @balajivelpula2435
    @balajivelpula24353 жыл бұрын

    Crystal clear explanation

  • @QuestionSolutions

    @QuestionSolutions

    3 жыл бұрын

    Many thanks!

  • @carolineee359
    @carolineee3592 жыл бұрын

    It is soooooo helpful! Thank you!!!!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    You're very welcome!

  • @clamp202
    @clamp2022 жыл бұрын

    Clear explanation, thanks

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    You're very welcome!

  • @cemileceylan1017
    @cemileceylan1017 Жыл бұрын

    Perfect explanation!

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Thank you very much!

  • @graceobeng4165
    @graceobeng41653 жыл бұрын

    I really enjoyed it, thanks

  • @QuestionSolutions

    @QuestionSolutions

    3 жыл бұрын

    Glad to hear :) You're very welcome!

  • @nataliatothemoon
    @nataliatothemoon2 жыл бұрын

    Praying Tanaka has a suggestion: may you include sample problems where we are given angles and not just lengths? It would be very helpful 🌝 🙏

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    I am not sure I understand what you mean? You need distances to calculate a moment, or you use the angles given to figure out the distances first. Could you elaborate on what you would like to see? :)

  • @sujalbhatu999
    @sujalbhatu9994 ай бұрын

    thank you so much brother

  • @QuestionSolutions

    @QuestionSolutions

    4 ай бұрын

    You are most welcome.

  • @Evanescence29
    @Evanescence292 жыл бұрын

    dudee you're such a legend!!!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you :)

  • @eiadm2047
    @eiadm20472 жыл бұрын

    Thx for your great effort! In the last problem, If we wanted to use position vector OA, what force should we use when doing the cross product?

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    The forces remain the same, only the position vector changes. So when doing the cross product, you would use rOA. 👍

  • @ichione732
    @ichione732 Жыл бұрын

    tyssm u ddont know how much youve helped me for this

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    You're very welcome! Keep up the great work and best wishes with your studies.

  • @jordanchongo3752
    @jordanchongo37522 жыл бұрын

    absolutely fantastic 👏👏

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you :)

  • @atherbukharii
    @atherbukharii2 жыл бұрын

    The best video on KZread, nothing better than this but could have been the best video in the galaxy if video was a bit slow. Edit: by bit slow i mean 10x slower

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you for your feedback. :)

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    @mohammedabdulnoor16152 жыл бұрын

    You earned my subscription 👍

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you very much, I really appreciate it. 👍

  • @kyordannydelvalle523
    @kyordannydelvalle52320 күн бұрын

    Wow, Even after graduating. I still remember how to do it. Just needed to refresh my memory a little.

  • @QuestionSolutions

    @QuestionSolutions

    20 күн бұрын

    Congrats on graduating and well done for remembering!

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    @yuzarsif35862 жыл бұрын

    thank you so much, u r a holly person!

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    You're very welcome!

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    @santiagoperez6332 жыл бұрын

    You are my hero. Thank you

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Many thanks!

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    @azizalbassam31322 жыл бұрын

    Wow, you are a lifesaver

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Glad to hear!

  • @humphrey6630
    @humphrey66308 ай бұрын

    Thank you so much.

  • @QuestionSolutions

    @QuestionSolutions

    8 ай бұрын

    You're very welcome!

  • @Hadi_Yahia
    @Hadi_Yahia3 жыл бұрын

    Thank you so much :D !!

  • @QuestionSolutions

    @QuestionSolutions

    3 жыл бұрын

    You're very welcome!

  • @ramkakaduke7423
    @ramkakaduke74233 ай бұрын

    God bless you man whoever you are

  • @QuestionSolutions

    @QuestionSolutions

    3 ай бұрын

    Thank you very much! Best wishes with your studies.

  • @ArmyLover-kn1qd
    @ArmyLover-kn1qd2 жыл бұрын

    Your videos are great!! Would you please be able to do a video on torsion as well as equations of elastic curves (deflection/ flexure formula)?

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you very much and I will definitely add it to my list of videos to make :)

  • @ArmyLover-kn1qd

    @ArmyLover-kn1qd

    2 жыл бұрын

    @@QuestionSolutions Thank you!

  • @rorygame5835
    @rorygame5835 Жыл бұрын

    Great video! Really helped me wrap my head around this. With the curved rod question, wouldnt the k-value of the cross-product be -256.68k? ((4 x -64.17)-(0x21.39)=-256.68k) Otherwise it wouldnt be perpendicular to the plane created by the two vectors.

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Glad to hear it was helpful. :) And yes, I have a pinned comment with the typo corrected. 👍

  • @adriannavarro1345
    @adriannavarro1345 Жыл бұрын

    I love this man

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

  • @ZMANthegreat
    @ZMANthegreat2 жыл бұрын

    great content..keep it up

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you very much!

  • @mpadithyaanoopnambiar7835
    @mpadithyaanoopnambiar78353 жыл бұрын

    You Deserve a Globe's Best Teacher Award 🤩

  • @QuestionSolutions

    @QuestionSolutions

    3 жыл бұрын

    🤩 You're too kind!

  • @freakingik2781

    @freakingik2781

    3 жыл бұрын

    Yes,he indeed deserves it. God bless u.....

  • @QuestionSolutions

    @QuestionSolutions

    3 жыл бұрын

    @@freakingik2781 :)

  • @harshmangukiya91
    @harshmangukiya914 ай бұрын

    amazing!

  • @QuestionSolutions

    @QuestionSolutions

    4 ай бұрын

    Thank you!

  • @avinashmbhat4256
    @avinashmbhat42562 жыл бұрын

    This is soo good

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Thank you very much! I hope it was helpful.

  • @kentpimentel9300
    @kentpimentel93003 жыл бұрын

    I got -128.34i +128.34j -256.68k for the cross product in 6:24.

  • @QuestionSolutions

    @QuestionSolutions

    3 жыл бұрын

    You are right, there is a typo, the k term should be negative. 👍

  • @sewanusunday9605
    @sewanusunday96052 жыл бұрын

    Thanks Man👍

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    You're very welcome! 👍👍

  • @btw_itachi_uchiha
    @btw_itachi_uchiha Жыл бұрын

    amazing helpful

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Thank you very much!

  • @scofield1602
    @scofield1602 Жыл бұрын

    THANK YOU

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    You're very welcome!

  • @dennardleonard1228
    @dennardleonard1228 Жыл бұрын

    This is the best video

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Thank you very much!

  • @ThecarsHQ
    @ThecarsHQ2 жыл бұрын

    please i'd like to ask if the position vector could be from anywhere like Rac instead of Roc

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Please kindly provide a timestamp to the place you're referring to.

  • @lostsky3631
    @lostsky36317 ай бұрын

    Was studying these same things for four hours and didn't understand a single thing. Can't believe I just understood everything in 8minutes😂😂I appreciate 🙏

  • @QuestionSolutions

    @QuestionSolutions

    7 ай бұрын

    I am really happy to hear that! Well done and keep up the awesome work :)

  • @lhyneduya
    @lhyneduya8 ай бұрын

    i like your videos it helps me a lot in my engr course. can i ask? how did you get the cross product from the 3 example

  • @lhyneduya

    @lhyneduya

    8 ай бұрын

    when i cross product i get the 128.34-213.9-256.68 is not the same from what you get

  • @QuestionSolutions

    @QuestionSolutions

    8 ай бұрын

    Please see: kzread.info/dash/bejne/eGx9qtSgY9PJZ8o.html

  • @halleighfaulkner3963
    @halleighfaulkner39633 ай бұрын

    for the fourth example, why are you using the position vector for BC if you're taking the moment about point A? would you not use AC?

  • @QuestionSolutions

    @QuestionSolutions

    3 ай бұрын

    There is a typo in the question, the moment was suppose to be about point B. I wrote a pinned comment about this too because I get asked it so many times. 😅

  • @darrenwood3826
    @darrenwood3826 Жыл бұрын

    Thanks for your help in this topic was wondering that isn't turning clockwise should be negative?

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    You can pick either direction, it makes no difference as long as you follow through with your positive and negative signs. So for example, assume you picked counterclockwise to be positive, then if you get a negative answer, the moment is clockwise. If you picked clockwise to be positive and you got a negative answer, then the moment is counterclockwise. If you picked counterclockwise to be positive and you got a positive answer, then the moment is counterclockwise. Lastly, if you picked clockwise to be positive and your answer is positive, then it is clockwise.

  • @darrenwood3826

    @darrenwood3826

    Жыл бұрын

    @@QuestionSolutions Thank you

  • @footballclips5013
    @footballclips501310 ай бұрын

    Sir at 2:45,when finding the components of x and y for F1,why did you use sin for the x-component instead of cos and cos for the y-component instead of sin? Or am I mistaking please?

  • @QuestionSolutions

    @QuestionSolutions

    10 ай бұрын

    Please watch this: kzread.infovynnKlJD_Jo?feature=share It'll clear up all your doubts. :)

  • @coylezxs
    @coylezxs2 жыл бұрын

    @ 7:50 I think the j in MOB is - 0j since the j should be negative (not that it matters since the value is still 0)

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    I don't assign negatives to zeros. It's neither positive or negative, it's just zero because -0=0 also, to me, positive "looks" nicer 😅

  • @mustakinahmedantuplasticst3912
    @mustakinahmedantuplasticst3912 Жыл бұрын

    I love you as a teacher

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Thank you very much! :)

  • @The.Wonderful.Inspiration.Of.
    @The.Wonderful.Inspiration.Of.9 ай бұрын

    Hello, I think there is a mistake at 6:23, Roc should be Roa since the starting point of the force is A no ? Or maybe I don't know the rule well ^^ Edit : Well I just heard "position vector from point O to any point of the line of force action", I learned that thank you :)

  • @QuestionSolutions

    @QuestionSolutions

    9 ай бұрын

    Yes, as long as the vector goes to any point on the line of action of the force, you will get the same answer 👍

  • @TuExklusiv
    @TuExklusiv7 ай бұрын

    Amazing

  • @QuestionSolutions

    @QuestionSolutions

    7 ай бұрын

    Thank you! Cheers!

  • @cantansug8750
    @cantansug8750 Жыл бұрын

    thank you

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    You're very welcome!

  • @Raniaska0306
    @Raniaska0306 Жыл бұрын

    I'm still amazed by how you explained everything in 8 minutes which took my professor at least 2+ hours to explain XD

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    😅I hope it was helpful and keep up the good work!

  • @xogtaaduunweynahamedia8446
    @xogtaaduunweynahamedia84462 жыл бұрын

    Thanks teacher

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    You're very welcome!

  • @DARTH-R3VAN
    @DARTH-R3VAN2 жыл бұрын

    Look at this legend

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    :) Many thanks!

  • @ragnarlothbrok6324
    @ragnarlothbrok6324 Жыл бұрын

    Hi, I love you thanks for this.

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    You're welcome! 👍

  • @l0velyjesse
    @l0velyjesse Жыл бұрын

    hi i hope you respond- at 6:55 i got +180j. please tell me why it's -180j? i thought we automatically add -in front of j? so it will be -(-)= +? i hope this makes sense. It's what my lecturer taught me :) Thank you for these awesome videos!!!

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    So for the second term, you'd get -[(0)(-500)-(-0.3)(600))] ==> -[0+180] ==> -180j. Please see: kzread.info/dash/bejne/eGx9qtSgY9PJZ8o.html Let me know if you need any more help :) You can use this: onlinemschool.com/math/assistance/vector/multiply1/ to verify your answers.

  • @l0velyjesse

    @l0velyjesse

    Жыл бұрын

    @@QuestionSolutions thank you so so much! you're getting me through my degree!!

  • @johnboeger595
    @johnboeger5952 жыл бұрын

    Can you please explain where the line of action is in the flagpole example? I'm assuming the line of action is up and down the flagpole

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Your assumption is correct. If we have a force directly along the flagpole, there would be no moment created.

  • @esharathod6205
    @esharathod6205 Жыл бұрын

    the BEST☺

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Thank you :)

  • @SuperLions7
    @SuperLions72 жыл бұрын

    Hello, I have a little mental hurdle that I'm trying to overcome which is represented at 3:58 does the line of action change, and does it become parallel to the black line representing the support at point A?

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    I assume we are talking about the 400 N force? If so, the line of action is always with respect to the force. So if we extend the orange dashed line backwards and forwards, that is the line of action. If that line crosses point A, then it can't create a moment. Here, that line of action is 5 m away from point A.

  • @ashlynraj6939
    @ashlynraj69392 жыл бұрын

    At 2:41 Why did you use the horizontal component of F2 for F2x instead of the vertical component like in F1?

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    Okay, so I think what you're actually asking is, why did I use cos for F2x, but use sin for F1x, and you are assuming cos and sin are related to horizontal and vertical components. If this is your question, please erase that thought out of your head. Sin and cos are NOT related x/y/horizontal/vertical components. They are purely based on the angle and it's corresponding side. I have no idea where students get this notion from, but please make sure you don't think like this. 😅I really encourage you to look at this video (kzread.info/dash/bejne/gKaAl8ZmYqbHkrQ.html), it's not long, and if you're really tight on time, just watch the first example. It will give a very good foundation for working with sin/cos and how to properly use them. I break it down step by step and by the end you will never get confused again but sin and cos. If this isn't what you're asking, I am not too sure I understand your question. Maybe rephrasing it might help me, if so, I am sorry :(

  • @nacure360
    @nacure36029 күн бұрын

    For example 3, if r is the position vector from the point where we take the moment about to any point along the line of action of the force, can r be the position vector from O to A? if I do that i get -128.4i +128.4j -256.08k? (the only difference is the sign of the z component to your answer).

  • @QuestionSolutions

    @QuestionSolutions

    28 күн бұрын

    You absolutely can. I have a typo in my answer (see pinned comment). Your answer is correct.

  • @nacure360

    @nacure360

    28 күн бұрын

    @@QuestionSolutions ohh thank u

  • @johnnym500
    @johnnym50010 ай бұрын

    For the first question, when solving the moment for M3: Shouldn't it be -300n(5m)+400N(4)?

  • @QuestionSolutions

    @QuestionSolutions

    10 ай бұрын

    So remember, we are looking for the perpendicular distance. F_x is horizontal, so we are looking for the vertical distance from point A, that's the perpendicular distance, which is 4m. F_y is vertical, so we are looking for the horizontal distance from point A and that's 5m.

  • @gangstashuckle
    @gangstashuckle Жыл бұрын

    Top G lesson

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Many thanks! 👍

  • @melyvaleriabanuelosvazquez959
    @melyvaleriabanuelosvazquez959 Жыл бұрын

    At 4:25 it was mentioned clockwise was positive, while I’m aware that counterclockwise is positive while clockwise negative, could you explain? as I’m confused now 😢

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    You can use whatever way you want to be positive. If you like counter-clockwise to be positive, you can solve it that way. Regardless, you will end up with the exact same answer. :)

  • @DraftingCADemy2023
    @DraftingCADemy20238 ай бұрын

    6:23 shouldn't be 256.68 a negative (-)? Since we alternate our operations in doing matrices + - + last term should be + [(4)(-64.17) - (0)(21.39)] which results to - 256.68. Please correct me if I'm wrong.

  • @QuestionSolutions

    @QuestionSolutions

    8 ай бұрын

    Please see pinned comment. You are correct, it's a typo. 👍

  • @DraftingCADemy2023

    @DraftingCADemy2023

    8 ай бұрын

    @@QuestionSolutions Thank you!

  • @chemicalvideobee2993
    @chemicalvideobee2993 Жыл бұрын

    bro helped me understand a whole chapter I skipped 2 hours before the test

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    That's great! Keep up the good work :)

  • @pritom7298
    @pritom7298 Жыл бұрын

    u r a boss.

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    😅

  • @ThunderGowPlayer
    @ThunderGowPlayer2 ай бұрын

    Hi, I have a question, why in 5:45 we get the position vector from OC and in 6:41 its from BC? That wouldn't mean that our position vector in 5:45 should be from O to A? I have tried that and it will change the values of the momentum vector

  • @QuestionSolutions

    @QuestionSolutions

    Ай бұрын

    You can take it from O to A, and you will get the same answer. There will be no difference. You most likely wrote down an incorrect position vector. The position vector OA would be 3i+3j+0k. Keep in mind that there is already typo in the solution for that question as mentioned in the pinned comment. The answer for that problem is -128.34i+128.34j-256.68k. Whether you use a position vector from O to C or O to A, you will get the same answer.

  • @ThunderGowPlayer

    @ThunderGowPlayer

    Ай бұрын

    @@QuestionSolutions Oooh, I just checked, and you are right! I was messing up with the position vector, but yeah, when you do it with 3i+3j+0k, you get the same answer. Sorry for the confusion. Thank you for your help and answering my comment, even though this video is 3 years old! New subscriber

  • @QuestionSolutions

    @QuestionSolutions

    Ай бұрын

    @@ThunderGowPlayer You're very welcome. I am glad you got it :) Keep up the great work and best wishes with your studies.

  • @itsmemags4778
    @itsmemags47785 ай бұрын

    Isn't F1x be equal to cos(theta)? since cosine represents the x-axis while sine represents the y-axis?

  • @QuestionSolutions

    @QuestionSolutions

    5 ай бұрын

    Please, take 1 minute and watch this video: kzread.infovynnKlJD_Jo That is incorrect, and you must erase that thought from your mind. You will lose so many marks on your exams from that view point, and I have no idea where students got this idea from.

  • @user-qo3yf8ge5z
    @user-qo3yf8ge5z Жыл бұрын

    A uniform metre scale of mass 200 g carries of a block of mass 800g at one of its end .At what distance from the same in end does does a knife and balance the scale?

  • @QuestionSolutions

    @QuestionSolutions

    Жыл бұрын

    Sorry, I don't solve questions like this because then I have to solve everyone's problems 😅 I encourage you to use math/physics forums if you need help with a specific question.

  • @pinmycomment5239
    @pinmycomment52398 ай бұрын

    Dude you taught me more than my professor did in 8 minutes lmfao thanks.

  • @QuestionSolutions

    @QuestionSolutions

    8 ай бұрын

    I’m really glad to hear that! Keep up the great work and best wishes with your studies.

  • @jordanchongo3752
    @jordanchongo37522 жыл бұрын

    If we take clockwise to be negative and anticlockwise to be positive we get different answers foe the moment, is it advisable to always take clockwise as positive unless stated otherwise?

  • @QuestionSolutions

    @QuestionSolutions

    2 жыл бұрын

    What you are saying is not possible. The direction is simply an assumption. For example, you can assume clockwise to be positive. In that case, if you get a positive value, then your moment is clockwise, and if you get a negative value, it's counterclockwise. Now if you pick counterclockwise to be positive, then if your answer is positive, your moment is counterclockwise, and if your answer is negative, it's a clockwise moment. I pick clockwise to be positive because it's a preference. You can pick either to be positive. Make sure you follow through with your direction and use proper positives and negatives, you will end up with the same answer. 👍

  • @jordanchongo3752

    @jordanchongo3752

    2 жыл бұрын

    @@QuestionSolutions ohk, thank you 🙏

  • @Ijee12
    @Ijee123 ай бұрын

    Hi, i thought clockwise direction was negative and counterclockwise was positive or it doesn't matter?

  • @QuestionSolutions

    @QuestionSolutions

    3 ай бұрын

    See pinned comment.