Friction in One Shot | Physics - Class 8th | Umang | Physics Wallah
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▶️Complete CLASS 8TH - SCIENCE ONE SHOT Lectures - • Science - Class 8th NCERT
In this lecture of Umang batch, Alok sir is going to teach you the chapter Friction.
Topics covered in this lecture are-
•Force of friction
•Factors affecting friction
•Friction: A Necessary evil
•Increasing and reducing friction
•Fluid friction
There are many other important chapters that we are going to cover in upcoming videos for class 8. Stay tuned with PhysicsWallah Foundation.
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#Science #Class8 #Umang
Пікірлер: 12 000
How many legends are watching this before a day of exam😂😂😂
@_POONAMGUPTA77779.
Жыл бұрын
Nice tomorrow is my s.c exam
@divyansutkarsh8395
Жыл бұрын
Me
@hotcupid_69
Жыл бұрын
Me🙋♀️
@opsobhit4584
Жыл бұрын
Me also
@omprakashthakur8046
Жыл бұрын
Me also
Rohan falls on the ground by banana peel because : 1. the surface of the banana peel is smooth which reduces the friction between his foot and ground . 2. the irregularities of the surface was filled up by the banana peel making it more fiction less.
@user-ut3nb7le3m
2 ай бұрын
😂😂😂😂😂🎉😂🎉😂😂 yes
15:05 - b) Motion 18:06 - rough surface exert more motion. 35:29 - c) Smaller 49:53 - b) Decrease Rohan falls on the ground by banana peel because it is Slippy which makes the object smooth and on smooth object friction decrease due to less irregularities and less interlocking.
@Poornanshplayzz7
3 ай бұрын
Thanks❤
@PremshilaDevi-rr9mg
16 күн бұрын
Motion Rahul went to the stairs and landing on the way by the flow of sand
15:05: Motion. 18:06 :The rough surface exerts more motion. 35:29: Smaller. 49:53: Decrease. Rain falls on the ground by banana peel because it is sleepy which make the object smooth and on smooth object friction decrease due to less irregularities and less interlocking
@vimaltiwari2503
Ай бұрын
😂❤❤❤❤❤❤❤❤❤❤ 31:44
3:48 Sir, rohan ek road matlab ki ek rough surface (with irregularities) me chal raha tha lekin jab achanak hi rough se smooth(with less irregularities) surface me per rkha to usne wahi force diya jo woh rough surface me de raha tha ab jab irregularities kam hogi to frictiin bhi kam hoga jab usne vo force lagaya jo vo rough surface jisme jyada friction tha usne wahi force kam friction me laga diya ab usne force jyada lagaya Or friction ke kam honi ki wajah se vo gira. CASE SOLVE!
Awesome sir ji 🤩🤩🤩
According to the question, Rohan fell because the peel of banana is very smooth and irregulartie between two surface is very smooth and the interlocking of friction is very less that's why he was fell.
1:03:56 Sir, just as you have shown us about the slipping man on the ice, where friction is less, in the same way Rohan also slipped on the banana peel that made him slide. Regards Chinmaya Ranjan Pradhan
15:10 (b) motion 35:22 (b) smaller 50:15 (b) decreases
@worstcraft
9 ай бұрын
bhai b wala greater hoga
@worstcraft
9 ай бұрын
@@walker66271yamate kudasai
@Vicky-zu9ue
6 ай бұрын
Motion
@EchoEarnings
5 ай бұрын
@@walker66271 wtf???????????
Rohan fell because the surface of banana peel was smooth and there was less friction due to less interlocking of hills and valleys. And the friction applied there was sliding friction
@nashra33337
6 ай бұрын
😢😢
@Reactjokes
6 ай бұрын
Achaa😂
@Shuu137
5 ай бұрын
Yrr kaisee😢
@matlabiduniya339
5 ай бұрын
High friction
@user-ho1mk3vt4l
3 ай бұрын
❤❤❤❤
Motion Rough surface exerts more pressure Smaller Rohan falls due to banana pill was smooth and with less irregularities thats why friction was less on it and when friction is less then we will slip while walking on it Decrease
15:06 Q1- (B) Motion 18:18 We need to apply less force compared to rough surface 35:35 Q2- (B) Smaller 50:08 Q3 - (B) Decreases 52:00 It is pull force Investigation result - Rohan slips and fall down as banana peel reduce friction between peel and road, and as a result falls down
Q1 answer= Motion Q2 answer= Smaller Q3 anwer= Decrease The answer of case is= when rohan step on banana peel he applied some force on it but the surface is plane that's why he fall because there is less irregularity and less interlocking between them 😊. Thank you for teaching 😊👍👍
@divine3778
Жыл бұрын
Thanks
15:05 - b) Motion 35:29 - c) Smaller 49:53 - b) Decrease
Rohan fell because the banana peel was smooth due to which there are less interlockings and the friction which made Rohan fall is sliding friction
1.motion 2.smaller 3.decrease in the investigation we found the conclusion of rohal slip on the group because pill of the banana contains less irregularities and less interlocking so the surfaces of the peal Banana is smooth surface that reason why rohal fell on the ground
Thank You sir for this amazing session. I was really finding a good channel for class 8 and I found this channel. This Channel is beating Vedantu, Unacademy, Byju's, Toppr, and many more. Once Again Thank you so much, sir
@sunitakumari6023
2 жыл бұрын
Me also
@Artist_Viku
2 жыл бұрын
I also😍
@anuragjha3570
2 жыл бұрын
YES
@freefireanabgmigameplay7394
2 жыл бұрын
Ok
@arshunknown1313
2 жыл бұрын
Bhai iska app bhi ha usma notes bhi haa
Answers 1. Motion 2. Smaller 3. Decreases Thank u sir for the amazing lecture
1.Motion 2.Smaller 3.Decrease Rohan fall bcz Banana peel is smooth and drag force is decrease
Is sliding friction smaller or rolling friction
1. - Motion 2. - Smaller 3. - Decreases Thankyou sir for the amazing lecture 😊
@wefamegame4942
2 жыл бұрын
Correct ✅✔
@GauravKumar-mk6qs
2 жыл бұрын
motion
@adityaparmar6573
9 ай бұрын
2. Motion Is the answer
1:04:42 Rohan fell beacuse the pell of banana 🍌 is smooth, hence there is small number of irregularities due to small number of irregularities the interlocking is less and friction is decreased 😮🎉 1:05:20. ❤ for pw
15:02 B motion 35:27 B smaller 50:18 B decreases -Rohan fall down when step on the banana peel because the banana peel is smooth and have friction on its less that he doesn't gets grip to stand.
1. Motion 2. Smaller 3. Decreases Rohan falls on the ground because the banana peel is smooth and his shoes was not able to interlock. So the banana peel reduces friction that's why he falls. Thank you sir for this lecture 🙂
@devilpolywar
Жыл бұрын
😂
@tubaazim8679
Жыл бұрын
Correct answer 👍
@vinaysiwach1640
Жыл бұрын
Don't now anything and bad experience. Aakash is much better than it . We can't understand anything . In simple way Bakwas
@Mapix09
Жыл бұрын
Right
@professionalpanther852
Жыл бұрын
@@vinaysiwach1640That's why you don't know how to write know 😒
15:49 motion 18:09 we should apply more force on rough surface 35:46 smaller 50:00 decreases
@royalfamily7831
10 ай бұрын
😂😂
@geetachauhan9438
6 ай бұрын
@@royalfamily7831why the hell you are laughing...😑
@ombajpai2747
4 ай бұрын
Motion
We know that the banana's peel was smooth. hence, friction is reduced due to less interlocking between the hills and valley and Rohan slip .
Q 1- motion Q 2- smaller Q 3- decreases Q 4- it reduces friction between the feet and the surface
15:21 - OPTION B 🗿Motion🗿 18:05 - 🗿Rough Surface🗿 35:37 - OPTION B🗿Smaller🗿 50:02 - OPTION B 🗿Decreases🗿 52:02 - 🗿Pull🗿
1.Motion (B) 2.Smaller (B) 3. Decreases (B) Thanku sir.💙💙
@non-stopstruggle578
Жыл бұрын
Oomfo thanku
@MayankKumar-fi3kf
Жыл бұрын
Hii
@darmusabir5898
Жыл бұрын
I love ❤you
Q. 1Friction opposes "motion''between the surfaces in contact with each other
(1) Motion (2) Smaller (3)Decrese (4) rohan fell on the ground by banana peel because banana peel is very slippery so its decrease its friction due to less irregularities and less interlocking Thank you so much sir my all doubt are clear 😊😊🙏🙏
15:05 (b) motion 35:22 (b) smaller 50:15 (b) decreases
@zankox5948
5 ай бұрын
Bhai Tara b wala answer galt ha greater ho na cahiya
@zankox5948
5 ай бұрын
Bhai Tera c wala bhi galat ha a ho na cahiya
1. Motion 2. Smaller 3. Decrease And rohan is slide because there, the friction is decrease because the surface of banana is smooth
@ayushrajhans1503
10 ай бұрын
with very less irregularities
@SR.respect1m
10 ай бұрын
Wrong hai greater hoga
1)motion 2)smaller 3)decrese Because banana peel are smooth and frictional force are decrese and road irregilarties are less
Sir sliding friction to rolling friction se bada hota ha??
1. Motion 2.smaller 3.Decrese Rohan fall on the ground by banana peel because it is slippy which makes the object smooth and on smooth object friction decrease due to less irregularities and less interlocking.
@bruh-hj7kc
3 ай бұрын
what if rohan was just drunk enough you dont know man
@rajnishranjan9376
3 ай бұрын
@@bruh-hj7kcbecause you are foolish
@bhatrehaan3118
3 ай бұрын
Isn't that concern 🤔😂
01:04:00 Rohan ne kele ke chhilke me ppav rakha to kele ka chhilka smooth hota hai jisse friction force kam ho gaya aur woh fisal ke gir gaya
@AnikkrGHOSH
Ай бұрын
😅😂 1:03:29
Sir asa koyi two smooth surface jisme koyi interlocking n ho ?
Q1: answer: motion✓ 16:02 Q2: answer: smaller ✓ 35:18 Q3: answer: decrease ✓ 49:52
Rohan 'fell' because of sliding friction in the surface the bannana pelled and just like when you spread powder in carrom board the rough surface became smooth for a specific time and the surface in which Rohan was standing was also became smooth because of bannana and Rohan fell
Thanks sir ❤ 1. Motion 2.smaller 3.decreases
Sliding friction is smaller than static friction.ROLLING
Sir fluid friction One more answer =Objects having a streamlined shape experience lesser fluid friction than those which do not have a streamlined shape
Note Kar rahe hai sir Very much good afternoon 🌞 sir Your lecture is very very nice 👍👌👍👌👍😊😊👍👍😊😊😊 sir
We have more force to apply more force in the Rough condition😊
@saniya1870
21 күн бұрын
Hiii
Q1=motion Q2=smaller Q3=decreases And rohan fall because banana peel Is smooth and friction decreases Friction Thank you very much sir
@zubedhamohammad3957
Жыл бұрын
Ap konsi class?
18:02 rough surface will take more force
1:04:29 The result of the investigation is banna peel reduce the friction cause it has a smooth surface and so friction acting on it is very low ofc there is a friction but not that much cause friction acts on rough surfaces more than smooth surface and so our friend rohan fell🧐 We got to know the culprit is friction 😂 Thank youu sir❤
15:39 q:1 b is correct the friction opposes the motion between the surfaces in contact with each other
15:26 motion 18:06 rough surface exert more motion 35:39 smaller 49:56 decreases
@kingofthegames3629
9 ай бұрын
Motion
Rohan fell due to less friction. The banana peel exactly worked as ice sheet.. At micro level there were less irregularities and due to this less interlocking.. Thank you Sir.👀🖤
@shakiranwar8902
2 жыл бұрын
Exactly you are right Rohan fell because banana's peel worked as ice sheet and because of non irregularities
@naveeshnehra4830
2 жыл бұрын
Yes are right
@Shakirakhatoon1975
2 жыл бұрын
right ✔️
@virndrasarojsaroj8926
2 жыл бұрын
Right sir
@s-i-xgaming7108
Жыл бұрын
Uske ankh kharab thi yr 🙄
1- motion 2- smaller 3- Decreases And Rohan fall because the banana peel is smooth and decrease friction .
Rohan fell because the surface of banana has less friction. And. So. Muccch. T h a n k y o u . Sir. ❤❤. Do i deserve a pin ❤😢
Rohan slipped because the banana peel has a very smooth surface and fewer irregularities are present on the banana peel because of that interlocking is less and less friction is present in the banana peel due to which he slipped on the banana peel.
In rough surface we applied more force
Because the banana peel full up the irregularities of surface when Rohan step on banana peel the friction force is low because of less irregularities that's why he falls
The boy acting the pull force in the example 😃😉
Qno.1- motion Qno.2- smaller than static friction Qno.3- Decrease
@anshikakumari3498
8 ай бұрын
Friction heat bhi generate krta h phir option c kyu nhi hoga question number one me?
1. Motion 2. Rough surface 3. Smaller 4. Decrease ❤❤❤
Smooth has less force❤❤ 17:58
Friction opposes the motion between the surfaces in contact with each other
Goodmorning Sir Answer 1 - Motion Answer 2 - Smaller Thank you for this lecture and giving us the opportunity to investigate this case and this lecture is so amazing for me.
@factbeast8674
5 ай бұрын
Motion
1, Motion 2,Smaller and 3, decrease Thank you soo much sir for sharing this video❄
@lavishsainisaini158
9 ай бұрын
Hlo 34:33
sir aapne jo liding surce padhaya hai wo galat tha . sliding force wo hota hai kii jab koi object ko same speed mein rakhe use kehte hai sliding force.
Rohan has fall down of banana pell because surface is smooth and banana also when he keep leg on pell there is less friction that's why less friction helps to more motion of object and his legs were go far and the centre of gravity is not correct and rohan fall down in the road
sir when we walk on a path . in which direction the friction works ? and when we walk in back ward direction .in which direction friction works?
@ramakrishnaallu4292
Жыл бұрын
Frrf🎉😊😅😅😮😮😅😊😊😊😮😢😢😢
This vedios is post 10months agoo but I'm in 8th now so I'm watching now and i just wanna say thank you sir thank you so much i understand very well 💜
@saikulsk6296
Жыл бұрын
Same
@darfayazdardar3026
Жыл бұрын
Same
@lyne_i5v
Жыл бұрын
Same
@gobindabiswas6646
Жыл бұрын
Same
@learnwithsurbhi
Жыл бұрын
I'm also in 8th now, but watched the videos earlier😃
(15:10 )Investigation 1 ans - *Motion* (18:00) 2nd ans - *Rough surface*
Sir rough ki condition mai hame Jyada force apply karna padega
GOOD EVENING SIR ANSWER - 1 MOTION ANSWER - 2 SMALLER THANK U SO MUCH SIR TO GIVING THE OPPORTUNITY TO INVESTIGATE THIS CASE.
@Trendingcreator169
Жыл бұрын
😊😊 good
@madhuyadav9601
Жыл бұрын
Thinkin you bar
1.motion 2.smaller 3.decrease Thnxs 😊 sir for good explanation 😊
35:42 very important
15:04 ans 1: motion 35:03 ans 2: greater 49:45 ans 3 : decreasing Rohan slips because banana peel is smooth so there is less friction between them and due it less interlocking rohan falls
Thanks sir For giving this amazing class I understand all concepts of friction
@rajazakir2767
Жыл бұрын
Ritesh kumar tell me the full form of MBBS solve fast
Rough Surface needs more force to slide on each other 18:05
Sir smooth surface mai irregularities hongi na?
Stage no. 2:- A. Greater is the correct option 😃
1.Motion 2.Rough surface exerts more motion 4.Smaller 5.Decreases
@divyanshyt8062
5 ай бұрын
Bro 1 2 and 4 not 3😂😂😂
@sameerahassan-dh9ti
4 ай бұрын
Motion
14:50 the answer is motion 35:07 the answer is smaller 49:49 the answer is decreases
banana surface is smooth and friction is less so rohan fell down simple thank you sir very nice lecture
35:52 evil❌ aval✅
That's like a style of teaching💯
@Sammy-pc1wf
2 жыл бұрын
True✨🙃
@study6591
Жыл бұрын
No
@leelaphadisangeet
Жыл бұрын
Yes😊😊😊
@user-pl1co6kk8v
Жыл бұрын
@@Sammy-pc1wf thanks
@user-pl1co6kk8v
Жыл бұрын
@@study6591 but how
R. I. P. for that guy 39:45 ,struggling to Walk 😂
Sir two books mxing together so the force is also applied sir this is also called the motion or not only two books mixing together
@AryanPal-hf7yl
7 күн бұрын
Sir this is also called force of friction/frictional force
15:07 - motion 18:06-rough surface 35:29- smaller 49:53- decreases
Thank you sir for this amazing explanation 👍
@Jp_gam
Жыл бұрын
Investigation Result - Rohan fell because when he stepped over the banana peel the friction between the banana peel and the surface became less because the banana peel has a smooth surface.
@RehamanKhan-pd4ow
9 ай бұрын
Good boy😅😅
because the smoothness of surface has force when friction are low than applied
5:28 drivers are shoked 😅
Q.1 Friction opposes the__motion__ between the surface in contact with each other. Q.2 Sliding friction is __smaller__ than the static friction. Q.3 Sprinkling of powder on the carrom board__decreases__friction.
@abdurraheem6888
2 жыл бұрын
Thank you so much sir for amazing lecture
Rohan fell down because the surface of banana peel is smooth and on the smooth surface friction decreases. When friction decrease rohan fell down on the surface of earth. THANKS A LOT SIR FOR THE AMAZING LECTURE
@ShreyaSingh-wc1cj
Жыл бұрын
or rohan ka luck bhi kharab tha😔
@SahilNisar-xe9be
7 ай бұрын
Motions
Static< Sliding< Rolling friction at descending order
Questions no 1 ka answer ----motion Question no. 2 ka answer ----greater
Sir when our friend Rohan had came to contact with banana pile . The banana pile was acting like a smooth surface and our friend Rohan had kept his leg into the banana then the friction become less then our friend Rohan had sleeped out.
@HidayatBhat-wx1zs
6 ай бұрын
Nice
Q.no.1 (b) Motion Q.no.2 (b) Smaller Q.no.3 (b) Decreases Rohan fall because there was the less friction and irregularities between banana peel and Rohan' feet Thank you sir 😊
@gamizreyaz7786
Жыл бұрын
Y
@AnubhavSingh-rt5ke
Жыл бұрын
Hello Anjali where are you from 👋
49:55 Q3 Spinkling of powder on carrom board decreases the friction
Sliding friction is smaller than static friction
@sarfarazaslamsarfarazaslam7539
2 ай бұрын
greater
15:05 - (B) Motion
@ShubhamYadav-dz6cs
Жыл бұрын
Both (A) and (B) hoga bro
@freegyan9493
Жыл бұрын
@@ShubhamYadav-dz6cs nhi bro (B) motion hoga
Answers Q.1 ) Motion 15:46 Rough Surface Needs More Force Than Smooth Q.2) Smaller 35:43 Q.3) Decreases 50:40 Rohan Fell Down Becoz The Banana Peel Has A Smooth Surface And On smooth Surfaces Friction Decreases . Thanks For Explaining All The Topics Through This Investigation.
@bhupendradhanuka4467
6 ай бұрын
Thank you
@aiyshaparveez7537
6 ай бұрын
Yes
So the result of the investigation is- Rohan slept because he stepped on the banana peel ,banana peel make the rough Road smooth by filling the small irregularities on the road. There fore there is less friction and he fell . Thank you very much sir