Center of Mass | Complete REVISION for JEE Physics | Mohit Sir (IITKGP)
👉 COM PDF Notes - bit.ly/3K8inhB
✅ How to take ELEMENTS - • Part1 - How to take El...
✅ Revision Series Playlist - bit.ly/3eBbib9
✅ JEE Main PYQs Link - bit.ly/2S54jzh
👉 EDUNITI_Goldmine Link - bit.ly/2VhOGFF
😍 Download Printable Format BEST Short Notes - bit.ly/3hizXlP
Timestamp
00:00 Introduction
00:19 Topics to be discussed
01:11 All links for Revision series
01:41 Understanding of COM
03:20 COM of Multiparticle System
04:25 COM of 2-Particel System
06:50 COM of Continuous Mass Distribution
09:00 COM of Standard Bodies (Constant Mass Density)
10:28 COM of Body (Variable Mass Density)
13:26 COM of Combined Structure
15:42 COM in Cavity Problems (2 Methods)
20:28 Displacement of COM
21:55 Velocity & Acceleration of COM (example)
27:48 PYQs Links
Center of Mass One shot
Center of Mass of two point system
Center of Mass in Cavity Problems
Cavity Problems
Velocity of Center of Mass
Acceleration of Center of Mass
Revision Checklist of COM
Revision Checklist of Center of Mass
There are many questions from the topic of Center of Mass which are asked frequently in both JEE Main and NEET previous year papers. This checklist video on center of mass is best for quick revision of all types of concepts on which questions are asked in JEE and NEET. This is one of most prospective topic on which questions are asked in paper.
All the concepts like center of mass of subtractive objects, additive objects and combination of objects are important and Mohit sir has very well quickly covered all such concepts in this physics video lecture including the cases of velocity and acceleration of center of mass and also on displacement of center of mass.
With the understanding of center of mass velocity and acceleration it becomes easier to gain an edge over conservation of linear momentum which sir has explained in the last concept of the above checklist video beautifully that also forms the basis of next checklist on collisions and conservation of momentum.
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About Faculty-
Completed Bachelors and Masters from IIT Kharagpur. Having an experience of +4 Years in teaching I reckoned the urge within me to help students appreciate the subject by delivering the toughest concept in simplest manner through practical demonstrations and visual aids.
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👉 COM PDF Notes - bit.ly/3K8inhB ✅ How to take ELEMENTS - kzread.info/dash/bejne/fGShuJikgpzbgtI.html 👉 EDUNITI_Goldmine Link - bit.ly/2VhOGFF *Revision Video Links* Unit & Dimensions kzread.info/dash/bejne/qZiYj9mliqmaeM4.html Vernier Caliper kzread.info/dash/bejne/ooqjsJJtZce8aKw.html Screw Gauge kzread.info/dash/bejne/mY2YlLKtnb2Wndo.html Kinematics_Motion in 1d kzread.info/dash/bejne/h2iCsNp_kanSmag.html Kinematics_Motion in 2d kzread.info/dash/bejne/ZpOO0ZeQmLDMZ9o.html Laws of Motion kzread.info/dash/bejne/aX6gtJqgfrW3edY.html Friction kzread.info/dash/bejne/hKJlxK6spJrLd84.html Work Energy Power kzread.info/dash/bejne/nZ6mutF-Xc6qeZs.html Circular Motion kzread.info/dash/bejne/faJ628-EeM_RhJM.html Centre of Mass kzread.info/dash/bejne/k5inlZeLe6ecYZs.html Cons of Momentum & Collision kzread.info/dash/bejne/ZZpk15aFXc_fqdo.html Rotational Motion_Part 1 kzread.info/dash/bejne/gWqek8-FoJOciKw.html Rotational Motion_Part 2 kzread.info/dash/bejne/gXyiy5N9gsfMcbQ.html Rotational Motion_Part 3 kzread.info/dash/bejne/o6mbq9OfibWpos4.html Gravitation kzread.info/dash/bejne/pHWelMqufLnHdc4.html Properties of Solids kzread.info/dash/bejne/mYeM2sykaJzSj8Y.html Fluids Statics (Part 1) kzread.info/dash/bejne/hHp_2pt7adzVY7A.html Fluid Dynamics (Part 2) kzread.info/dash/bejne/i2tlmdiKoLirerQ.html Fluid Properties (Part 3) kzread.info/dash/bejne/iGyst7mQe5XVhJM.html Simple Harmonic Motion kzread.info/dash/bejne/hH2WmdGffqqWaaw.html Thermal Properties kzread.info/dash/bejne/gY2ezNuJed3KlKg.html Heat Transfer kzread.info/dash/bejne/gq2CxNGBl9e_qrA.html KTG kzread.info/dash/bejne/ioNl1th_mKzHYKw.html Thermodynamics kzread.info/dash/bejne/m66TzchqmrWqgto.html Wave Motion -Organ Pipes and Resonance Tube kzread.info/dash/bejne/mHZr0siDZ5rgkZs.html Wave Motion - Doppler's Effect kzread.info/dash/bejne/a2F22rGakdDUp8o.html Electrostatics kzread.info/dash/bejne/ZaeousSAgrDJos4.html Capacitors kzread.info/dash/bejne/d4x5y8ucm7G7m7w.html Current Electricity kzread.info/dash/bejne/maFsqLefmtW-YZs.html Moving Charges and Magnetic Effect of Current kzread.info/dash/bejne/h4B4lLGkYaates4.html Earth's Magnetism kzread.info/dash/bejne/k2h3tpeuhtqne5c.html Magnetic Properties kzread.info/dash/bejne/aGeX2caSiLHSiag.html EMI kzread.info/dash/bejne/oqmKw9imj6qsgrA.html Alternating Current kzread.info/dash/bejne/aWiYtrtmoN2zj9I.html Ray Optics kzread.info/dash/bejne/dJyi27aQqqzScqQ.html Wave Optics Part 1_Interference kzread.info/dash/bejne/fntp0M5-aLu6law.html Wave Optics Part 2_Diffraction_Polarization kzread.info/dash/bejne/q6GB29uDd6rXnrw.html Optical Instruments kzread.info/dash/bejne/gYWn1cR9eJOnZKw.html Electromagnetic Waves kzread.info/dash/bejne/lJeKusl-m9y3irw.html Semiconductors_Basics + Zener Diode kzread.info/dash/bejne/kXVmrNGmgZqTZZM.html Semiconductors_Transistors kzread.info/dash/bejne/oqd42c5xZLHgkpM.html Semiconductors_Logic Gates kzread.info/dash/bejne/oo6Ys6OzfMWshNI.html Communication Systems kzread.info/dash/bejne/aoKbr9OEabudabw.html Modern Physics_Part 1_Atomic Physics kzread.info/dash/bejne/a4p_t9B-Y9DWeM4.html Modern Physics_Part 2_Photoelectric Effect kzread.info/dash/bejne/ZGijtrOpaJfQos4.html Modern Physics_Part 3_Dual Nature of Light kzread.info/dash/bejne/Yq6jtMGskbCngbw.html Modern Physics_Part 4_Radioactivity kzread.info/dash/bejne/c5iMlbt7mLTfn8o.html Modern Physics_Part 5_Nuclear Physics kzread.info/dash/bejne/iHiL07iamKrPqMY.html Modern Physics_Part 6_X Rays kzread.info/dash/bejne/lod8usaziJq0iJM.html
@-a-1787
2 жыл бұрын
sir mere coaching ka material bhi hai mere pass kya mein uski jee mains level ki exercise karun revision ke liye ya nahi (40-50) ques hai per chapter maine abhi tk nahi kiya hai aur mere kafi sare chapters ke (2019 2020 2021) ke pyq ho gaye hain pls reply 🙏🙏
@mohitgoenka99
2 жыл бұрын
@@-a-1787 If you have most of 2021-2019 PYQs then you can do your material's JEE Level questions
@-a-1787
2 жыл бұрын
@@mohitgoenka99 thank you sir
@-r-9341
2 жыл бұрын
Sir mere jo pyq questions nhi solve hue unke liye kya karna hai taki mere vo bhi sove ho jaye Pls bata dejiye 🙏🙏
@alison-pv4fk
2 жыл бұрын
Sir please provide Com and work energy power printed notes Please
Sir please hire one chemistry and math teacher for this channel. Who can make us revise like this and if it will be done then this would be first channel having such a revision series for all the three subject.Even not three only one teacher for physical and organic chemistry would be enough 🙏🙏
@triggeredinsanfanpage7774
2 жыл бұрын
Yes sir plz sir
@triggeredinsanfanpage7774
2 жыл бұрын
For maths plz sir
@channelforkids9345
2 жыл бұрын
@@triggeredinsanfanpage7774 triggered insaaan 😍😍😍, big fan of you bro , you didn't give JEE till now ?
@rono_5_dors
2 жыл бұрын
@@channelforkids9345 pagal ho kya vo tume triggered kaha se lg rha hai fan page likha hai aur subscriber dekho bilkul dumb ho kya
@channelforkids9345
2 жыл бұрын
@@rono_5_dors I was just joking bro 😂😂😅😅😅😅 (sarcasm)
After watching these videos even 1 shots seems too long 😂
Timestamp 00:00 Introduction 00:19 Topics to be discussed 01:11 All links for Revision series 01:41 Understanding of COM 03:20 COM of Multiparticle System 04:25 COM of 2-Particel System 06:50 COM of Continuous Mass Distribution 09:00 COM of Standard Bodies (Constant Mass Density) 10:28 COM of Body (Variable Mass Density) 13:26 COM of Combined Structure 15:42 COM in Cavity Problems (2 Methods) 20:28 Displacement of COM 21:55 Velocity & Acceleration of COM
9:48Theta in Radians Hai Jaroori 14:11 Revise this variety Combination of COM 15:54 Cavity Problems 26:17 Vectors ka dhyan dena hai
just amazing it is my first revision class here gonna follow from now......never seen on any channel that whole chapter is completed within 29 min with that much of clarity....
Out of so many physics one shots, mohit sir's one shots are very much pyqs oriented, when I started solving pyqs I mapped with his notes and almost 95% were same , thank you so much for delivering such high quality content to us sir.
@mohitgoenka99
2 жыл бұрын
thanx dear and thanx for sharing your experience with all of us.
Sir the way you teach physics is amazing the practise sessions and rank booster problem sessions are amazing
@mohitgoenka99
2 жыл бұрын
Glad to hear that
@studywithsam9954
2 жыл бұрын
hahahah sir pic on ur dp nice
Sir ye jo aap hamare liye kr rahe hain . Really very helpful sir . Thank you sir . Charan sparsh🙏🙏🙏🙏
These revision videos are fantastic. Really some concepts slip through the mind after completion of the chapter 😅 but your explanations are easy to understand. Thanks Sir
Best content ever ....never found a channel with such a perfect explanation ...
Finally completed! Thank you so much, sir we are grateful for this revision session.
@mohitgoenka99
2 жыл бұрын
Welcome dear
Sir aapka revision krane ka tareeka bhot hi badiya hai choti si video me pura ka pura chapter revise ho jaata hai
Sir com of semi disc ka 4r/3π pe hota h apne 13.23 pe semi ring ka le rahka doubt ?????
18:44 com of cavity displacement of centre of mass 21:47
Thank you so much sir🙏. Your contribution in our preperation is just tremendous. Thanks a lot sir❤
@mohitgoenka99
2 жыл бұрын
It's my pleasure
Good for revising all concepts and formula 😃😃
Non uniform mass distribution. Take elemental strip . y= com of that strip 15:13 point to be noted 15:50 cavity 24:35
Sir ke ye notes bilkul allen ka dropper notes and lecture se match kar raha hai best content on KZread for revision with 0👍
ONE OF THE BEST REVISION SERIES FOR NEET ASPIRANT
Note for my future reference : DONT YOU DARE FORGET THE FORMULAE! exam ke time panic karogi derivation ni ho payega r com = Sigma mi ri/ Sigma mi ( can work for ∆ displacements as well) Here, for continuous distributions: Integration r dm/ integration dm You can differentiate too to get v com , a com V v imp point In integration x dm/ M here x is COM of dx !!! Don't forget it!!!!!! it's not distance of dm from reference! ok that's it!✨😁
@walter_white69420
10 ай бұрын
Thank you🙏
@BHARAT_3433
7 ай бұрын
thank you 🙏🙏
@dipalibaul9120
5 ай бұрын
Kam aaya?
@SahajOp
3 ай бұрын
x is x corrdinate of com of dm
Sir I am 11th standerd student when i started my physics in 11 I have lot of Problem with physics but when I see your channel I felt that "bhai ye khajana ab tak kaha tha" and now my mock test result is average 70-80
@mohitgoenka99
2 жыл бұрын
Excellent dear
@shashanksharma823
6 ай бұрын
Konse college me ho abhi ???
Thank you so much sir for the session. I've several problems in this chapter and finally I overcame all of them.
@mohitgoenka99
2 жыл бұрын
Excellent
Thank you sir for this wonderful lecture this used to be my weakest topic but after seeing this video my doubt have been solved.
I haven't studied this chapter and after seeing this lecture of 25 min , the concept is crystal clear. One of the bestest physics teacher.
@mohitgoenka99
2 жыл бұрын
excellent dear
@nakshtraruhela7263
Жыл бұрын
@@mohitgoenka99 you are best sir ! SIMPLY THE BEST!!!!
@nakshtraruhela7263
Жыл бұрын
@@mohitgoenka99 sir we want a chemistry teacher also
A mere thank you is not enough for you sir!🙏
Love you 3000 Sensei ! Revision has become more fun.. thanks to you ..🌟🌟
@mohitgoenka99
2 жыл бұрын
Glad you enjoy it!
Thankyou sir! The video was very helpful ❤
I was pleasantly surprised with how incredibly helpful this was. All my concepts are clear. Thank you sir...
Thank you sir 🙏 & Happy Holi
11 chapters completed sir just because of you thanks a lot you are just like god father for me by mid of october ill be completing whole syllabus thanks a lot again sir
Wow 😊😊🤗... Amazing content ...This channel is the best channel for physics jee main revision .... We should share this lecture and content to our friends ..so that they also make their revision of physics in a very good manners for upcoming IIT jee mains ...😊😊.. Thank you so much sir for your efforts ..😊.., Sir app IIT advance ke liye bhi content prepare kijiye na 😃
@mohitgoenka99
2 жыл бұрын
Thank you soo much dear for such wonderful comment. For adv you may follow these: Rotational Motion bit.ly/2WIZ2j5 Gravitation bit.ly/3t5Mqyr Ray Optics bit.ly/3tcm4e8 Magnetism bit.ly/3t2A3Dd EMI and AC bit.ly/3jwsEZF Electrostatics bit.ly/38vEeOm Capacitor bit.ly/3gSRqRX Current Electricity bit.ly/3n5k1HR Thermodynamics bit.ly/2Yh3I07 Modern Physics bit.ly/3tbPQ2v
Thank u sir for this amazing series
You are the best I always used to end up with watchung long one shots just for my revision you did it way better I was able to do 95% questions with concept thankyou!!
Thank you sir for this lecture ,This was indeed helpful for me for detail understanding of the concept more precisely
@mohitgoenka99
Жыл бұрын
Most welcome dear
U owe a lot from all of us sir!!! Thank u for this valueable content. U r the only 1 who understands my pov and requirements and then explain!!!!! Thank u so much sir♥️
@mohitgoenka99
2 жыл бұрын
It's my pleasure
@GamingFreak-xf7kn
2 жыл бұрын
@@mohitgoenka99 sir plz don't mind asking this, but plz start making videos on math as the contents on physics are over, I'm really struggling in math and the way u teach boosts up my confidence, just like it did toy physics,,,,, so it's my humble request plz make videos on math🙏🙏🙏🙏
@josuke21
2 жыл бұрын
@@GamingFreak-xf7knsir teaches physics only . By math you mean basic differentiation and integration ?
@GamingFreak-xf7kn
2 жыл бұрын
@@josuke21 I meant in general for overall topics
@josuke21
2 жыл бұрын
@@GamingFreak-xf7kn but sir teaches physics not math :/
Sir it iws an amazing revision session!! I think this channel will gain much growth in future!
@mohitgoenka99
2 жыл бұрын
Thanks a ton
Sir 6 number com of body (non uniform mass distribution) example mai to semicircular disc diya Hua hai .too dm mass com 4R/3pi hoga na .sir please Bata degiya.
helpful content for all jee aspirants :)))))))))))
Thank you so much sir I was eagerly waiting for this and you provided this . Thank you from my bottom of heart
@mohitgoenka99
2 жыл бұрын
Most welcome. Make best use of it
Sir i haven't studied this chapter in school. IM Jee 2023 aspirant SHOULD I WATCH THIS LECTURE OF JUST 29MIN OR GO FOR A COMPLETE LECTURE. (I don't know basic of this chapter)
@dharampal10486
Жыл бұрын
Bhai same doubt what should I do?
Thank you so much sir.....❤❤❤❤❤❤❤❤
Sir 6:25 pe aapne R1 ke formula me 5 kese put kiya , Usme to dono mass ke bich ka distance ata hai na ?
Sir i m facing problem in the plank questions (in which 1 or 2 person are there and they move with some velocity on the plank) in COM topic ..have you included that topic in any video pls tell
Sir just one doubt mera 90 percent syllabus complete ho chuka(in phy) hai lekin ray optics and rotation reh gya hai toh mai in dono mei se koi ek chapter karlu mera 1 ko paper hai ap bata do konsa chapter karu 🤓
Point 10 solved all each every doubt completely
Sir last question mein particles close jarehein par then COM unke biich me rehna chahiye tha par aisa kyoun nahi hua ye 90m ke upar aya?
@_sG47
Жыл бұрын
Voh 90m ke upr nahi aaya.... Vo ground se height aaya hai COM ka.
THANKYOU very much SIR JI ,,,,love you 🙏🏼🙏🏼❤️❤️❤️
ty sirg, it was helpful
Ye dekhkar aacha laga ki sir aapne ad lagaaya hai video me abhi Eduniti se gonna rock 🔥
thank you sir it was rapid and understanding video 👍👍
@mohitgoenka99
6 ай бұрын
All the best keep solving, learning and revising #learnlikeneverbefore
Simply legend !
Again a awesome and fantastic session♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️ Thanks a lot for providing this🙏🙏
@mohitgoenka99
2 жыл бұрын
Thank you so much 🤗
Thank you sir ❤❤😊😊
Beautiful lecture sir absolutely loved it!!!👌😇
@mohitgoenka99
2 жыл бұрын
Glad to hear that
Great work sir
Excellent Sir.
27:40 I was always going blank while solving such questions in 1st year. Thank you sir your explanations are the best
sir should we put values with sign ? in acceleration n velocity of COM ?
Cavity problem method no.2 was really good 🎉
@mohitgoenka99
Жыл бұрын
Keep learning
Last question me kahi mention nhi Kiya gya ground ke respect me Height ye kaise krenge phir?
best series sir i have really watched all the videos and my physics score is really boosted from 20 to around 50 in mock test the best physics channel for mains and advanced
@mohitgoenka99
2 жыл бұрын
thanx for nice words dear and most welcome
Thank you sir 🙏🏻🙏🏻❣️waiting for collision
@mohitgoenka99
2 жыл бұрын
welcome dear next wahi hoga
Thank you sir for this amazing lecture.
@mohitgoenka99
2 жыл бұрын
Most welcome
Sir timing 5:43 given m1r1=m2r2 so r1=m2r2/m1
Sir love you sir from Core of my heart ❤️❤️❤️....
Sir thanks for all these videos.
7.COM of combined structure ka jo example hain usme R,4R/3pie kaise hua Sir please samjha dijiye
27:14 another approach- can we find velocity of COM and then use maximum height = u^2 / 2g ?
Thank u so much sir for this amazing session🥰🥰
@mohitgoenka99
2 жыл бұрын
Most welcome dear
striking off topics from the list gives another level of satisfaction thank you sir for this series, waiting for collision and RBD
@mohitgoenka99
2 жыл бұрын
Great dear Next cons of P & Collision
hello sir came here after reading the instruction on the digital short notes so this is the revision playlist which u have mentioned in red about right????
was waiting for this , gained confidence in com. 5 LECTURE me jo samjh nahi aaya 28 min me aa gaya😁😁
@mohitgoenka99
2 жыл бұрын
Excellent dear
@Hey_sriram23
2 жыл бұрын
Completely agree on that 😀😀🫀🫀😀😀
Sir aapne itnaaa perfect content banane me kitni mehnat kari hogi🤩... Thank you sir... I am successfully on my Day 13 of the 20 days challenge 🤓 I regret for ignoring this channel before 😐😔
@mohitgoenka99
2 жыл бұрын
keep learning dear
@abhimaurya287
Жыл бұрын
same here i also ignored his channel but now 😊
@nakshtraruhela7263
Жыл бұрын
@@mohitgoenka99 sir pleass upload all these things for whole JEE CHEMISTRY syllabus also and I can assure you that you will hit 1M before 2024 !😃😃😃😃😃😃
Mindblowing explanation 😮
Thank you sir for your efforts from now I will also give my best and will improve day by day and achieve higher marks in physics
@mohitgoenka99
2 жыл бұрын
Keep it up and wish you all the best
Love you sir, thnx for short revision
sir at 12:15 com of semicircular disc is 4R/3PIE , it isnt a semicircular ring and hence ans is r/pie
Sir it might be a silly doubt but at 12:55 aapne y = 2r/pie kyu liya Disc ke liye to 4r/3pie hota haina Ya fir aapne jo element assume kiya vo maybe ring ki tarah hai to aapne aisa kiya But sir hm disc me element ko ring ki tarah to maan bhi nhi skte Plzzzzzzz reply sir🙏🙏🙏🙏 #learnlikeneverbefore
TYSM 💜
Sirs video be like " sidhi baat no bakwaas 💥" What we wanted ✌️
Love you Sir !!!!❤️
Wow unbelievable concept explanation
Thanks Sir ❤
Thanks a lot sir Your revision series is awesome 👍🙏
@mohitgoenka99
2 жыл бұрын
Most welcome
Sir mene 12th diya hai iss saal per mere marks bhi bohot kam aaye boards m , kya m iit crack kar sakti hu 2023 m? Bohot disappointment feel ho rhi hai, covid k wajha se padhai thik se hui hi nhi..
Sir main ne ek doubt tha ex me com ki velocity ne ham puchna na uske saath ham kinematics ke Hmax ke formula me substitute karke aasani se aare na sir
Maza aagya sir targetting 70+ in first attempt in physics
Thank u soo much for this vedio 🙏🙏🙏🙏too much respect for u
@mohitgoenka99
2 жыл бұрын
Most welcome dear
Sir our channel is growing so fast 😊😊
Each and every chapter explained in a such a great manner🤩Physics is becoming easy now
@mohitgoenka99
2 жыл бұрын
Glad to hear that
Thankyou very much sir for such a helpful video❤
@mohitgoenka99
9 ай бұрын
Keep watching
sir you are a hero for us thaaankkuuu verry much
Sir,Thank You!!❤
Emotional Ho Gya sir....Kho gya tha soch mein.....Yeh Bhi possible hain kya koi itna accha free content de skta hain ..thank You very much sir♥️
@mohitgoenka99
2 жыл бұрын
wish you very best
I am thankful to GOD for my dream teacher I have got ... It's always too good to live a life because teachers like you make our lives wonderful ... I am indebted to you . Thank you so much Sir .
@mohitgoenka99
2 жыл бұрын
It's my pleasure
revision pointers 1)arc of a ring=R sin theta knot/theta knot(where theta knot is half the angle subtended by the arc) 2)sector of a disc=2R/3 sin theta knot/theta knot 3)reduced mass systems ka com, 2 methods, negative mass method, and m1 m2 resultant is og, method 4)net linear momentum=linear momentum of com -if net force=0, linear momentum is constant
@mohitgoenka99
8 ай бұрын
well done dear #learnlikeneverbefore
Happy makar sakarnti sir...🥰🥰🥰🥲✌✌😇😇. Thank you sir for revision 😚😊✌✌
@mohitgoenka99
2 жыл бұрын
Same to you too dear. And most welcome
this is amazing !! i was searching for such way of teaching the " format " quality theory and quality questions maza aa gaya !
@mohitgoenka99
2 жыл бұрын
glad to know that dear. Make best use of every single revision videos
Thank u sir for this amazing explanation ❤❤❤
@mohitgoenka99
9 ай бұрын
Always welcome