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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🎦 Eight Lectures per week will be uploaded.
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#Science #Class8 #Umang

[@ars7016]

Kon kon 2024 me dekhne aaya h😂😂😂😂😂

[@saksham-te3fh]

Same

[@AbhinavBhArt]

The legend is here

[@AbhinavBhArt]

​@@saksham-te3fh😂😂😂 me raat ke 12:00 am me 😂😂

[@AbhinavBhArt]

​@@saksham-te3fhwhere are u from bro

[@saksham-te3fh]

@@ars7016 jammu and kashmir

[@nxgdeathyt8968]

How many legends are watching this before a day of exam😂😂😂

[@_POONAMGUPTA77779.]

Nice tomorrow is my s.c exam

[@divyansutkarsh8395]

Me

[@hotcupid_69]

Me🙋‍♀️

[@opsobhit4584]

Me also

[@omprakashthakur8046]

Me also

[@GloriousPurpose-yq9vo]

1.(b) Motion
2. (B) Smaller
3. (B) Decreases
6. Rohan fall because banana peel was smooth and his shoes grip wasn't good enough the peel reduce the friction much.
Pov:- keele ka chhilka nhi pheekna chahiye aur ghisi hui chapal bhi nhi pehni chahiye 😂

[@AniketChaurasiya-rr1fl]

Who is watching this video after winning of India in the T20 match 2024

[@SonuYadav-7777]

Yes bro 😂😂

[@AniketChaurasiya-rr1fl]

@@SonuYadav-7777 hello bro

[@gameruchiha4077]

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]

😂😂😂😂😂🎉😂🎉😂😂 yes

[@blackdevilofficial64]

How many people watching in night like me

[@artcraziness4254]

Answers
1. Motion
2. Smaller
3. Decreases
Thank u sir for the amazing lecture

[@FocalLens-hk6tj]

As a senior of CLASS 11TH PLEASE FOCUS.
BASICS SHOULD BE CLEARED FOR MOVING FORWARD.

[@Apramya_10]

Q1-(b)-motion
Q2-rough surface
Q3-(b)-smaller
Q4-(b)-decreases
Q5-pull
Q6-Rohan fall because banana peel is smooth and his shoes where not able to make grip and the banana peel reduces the friction.

[@rajkumari-rf3gn]

🙏

[@ffarpitgamers8385]

😂 😂😂😂😂😂😂😂😂

[@sevencolorsofrainbow7353]

😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂

[@AdityaSharma-hm4eq]

question to teen hi the

[@shreyashtathe9875]

Like for these answer
👇

[@KING_GAME_PLAYER]

15:05 motion

[@dad_dk_ffx]

15:05 (b) motion
35:22 (b) smaller
50:15 (b) decreases

[@zankox5948]

Bhai Tara b wala answer galt ha greater ho na cahiya

[@zankox5948]

Bhai Tera c wala bhi galat ha a ho na cahiya

[@mohikamathur2417]

Stage 1 question's Answer - (b) Motion
Stage 2 - (b ) smaller
Stage 3 - ( b) descreases

[@AnjaliKumari-ln4ov]

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]

Y

[@AnubhavSingh-rt5ke]

Hello Anjali where are you from 👋

[@Soumya_pw]

Awesome sir ji 🤩🤩🤩

[@umangop]

Hey

[@Crystal_shine550]

15:49 motion
18:09 we should apply more force on rough surface
35:46 smaller
50:00 decreases

[@royalfamily7831]

😂😂

[@geetachauhan9438]

​@@royalfamily7831why the hell you are laughing...😑

[@ombajpai2747]

Motion

[@kumarimuskan3776]

1.Motion (B)
2.Smaller (B)
3. Decreases (B)
Thanku sir.💙💙

[@non-stopstruggle578]

Oomfo thanku

[@MayankKumar-fi3kf]

Hii

[@darmusabir5898]

I love ❤you

[@kirtisharma9699]

15:05 - motion
35:29 - smaller
49:53 - decrease
52:00 - pull

[@ishaan4049]

Answer 1 is wrong as it also produce heat for eg rub ur hand faster and u will see motion and ur hand will be warm

[@B2-BAD]

Example - Matchstick

[@archanakumari-wb5xw]

Qno.1- motion
Qno.2- smaller than static friction
Qno.3- Decrease

[@anshikakumari3498]

Friction heat bhi generate krta h phir option c kyu nhi hoga question number one me?

[@Krishna_91]

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]

Thanks❤

[@PremshilaDevi-rr9mg]

Motion Rahul went to the stairs and landing on the way by the flow of sand

[@rp-randompro5176]

@@Poornanshplayzz7 Thank u bro

[@AYUSH_GAMING30]

1:20 is the way to teach ❤😊😊

[@phythongaming8590]

Ffgame

[@amritasculturalactivities4466]

15:47 (B) motion
35:06 (B) Smaller
49:40 (B) Decreases
51:59 -Pull

[@RiteshKumar-in6oj]

Thanks sir
For giving this amazing class
I understand all concepts of friction

[@rajazakir2767]

Ritesh kumar tell me the full form of MBBS solve fast

[@mamonpal9754]

30:20 30:22 30:23 30:23 30:24 30:24 30:24 30:24 30:24 30:25 30:25 30:25 30:25 30:25 30:25 30:26 30:26 30:26 30:26 30:26 30:27 30:27 30:27 30:27 30:27 30:28 30:28 30:28 30:28 30:28 30:28 30:29 30:29 30:29 30:29 30:29 30:30 30:30 30:30 30:30 30:30 30:31 30:31 30:31 30:31 30:31 30:32 30:32 30:32 30:32 30:32 30:33 30:33 30:33 30:33 30:33 30:33 30:34

[@anupamsingh630]

bachelor of medicine bachelor of surgery

[@AK_HARELIYA]

1:04:13 because the kele ka chilka was a lubricant it reduced the friction between 2 surfaces resulted in R I P of Rohan

[@tiwaryyy__5]

😁mara nhi

[@CHAMP99X]

R. I. P. for that guy 39:45 ,struggling to Walk 😂

[@kuldeep.k0781]

Koontz Koontz 2027 ma Dakhineswar raha hai

[@vidyadeepamcoachingclasses2308]

Motion

[@swekshakathil3282]

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

[@anuarora-hk7st]

the friction reduced due to smooth surface

[@ankita1065]

1.Motion
2.Rough surface exerts more motion
4.Smaller
5.Decreases

[@divyanshyt8062]

Bro 1 2 and 4 not 3😂😂😂

[@sameerahassan-dh9ti]

Motion

[@ASMR_Reviews759]

15:5 motion

[@LaxmiSingh-tq5bx]

Thanks sir ❤
1. Motion
2.smaller
3.decreases

[@superboyprince7786]

1. Motion
2. Smaller
3. Decrease
And rohan is slide because there, the friction is decrease because the surface of banana is smooth

[@ayushrajhans1503]

with very less irregularities

[@SR.respect1m]

Wrong hai greater hoga

[@s2hgaming680]

That's like a style of teaching💯

[@Sammy-pc1wf]

True✨🙃

[@study6591]

No

[@leelaphadisangeet]

Yes😊😊😊

[@user-pl1co6kk8v]

@@Sammy-pc1wf thanks

[@user-pl1co6kk8v]

@@study6591 but how

[@joymishra6138]

15:08. Motion

[@aashnamorwal2583]

1. - Motion
2. - Smaller
3. - Decreases
Thankyou sir for the amazing lecture 😊

[@wefamegame4942]

Correct ✅✔

[@GauravKumar-mk6qs]

motion

[@adityaparmar6573]

2. Motion
Is the answer

[@mamatabehera8362]

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.

[@soniatyagi4104]

Who is watching this vidio in September 2024😅

[@yashchaurasiya1]

Door abhi September aaya hi nahi ha Aaj to 28 August ha

[@shaziyashabaz9022]

Mein future se 😅

[@Subhalaxmi-ue2oe]

I am 😂

[@jayeshrathod8831]

1:04:08 Rohan fell because in groves were not able to interlock to increase friction

[@alyssarosiex]

18:04 Rough surface needs more force to be applied.
Ans 1. Motion
Ans 2. Smaller
Ans 3. Decreases
Rohan slipped because of sliding friction, as the banana peel is slippery.

[@chitralekhasingh3425]

Yaa ! Your answer is right

[@raja4kstatus816]

Qno.1 a ans

[@santoshkumarsantosh2080]

Motion is right

[@alyssarosiex]

@@chitralekhasingh3425 tysm💜

[@REYANSHZ_EDITS]

THANK YOU SIR FOR GOOD EXPLANATION :):):):):>:>:>
ANSWERS OF THE FOLLOWING QUESTIONS ARE AS FOLLOWS:-
1. (B) MOTION
2. (B) SMALLER
3. (B) DECREASES
THE CHILD(OUR FRIEND) IS PULLING THE BAG.

[@MsSumanjanu]

Oh very nice brooooooooooo

[@MsSumanjanu]

I think you are topper ☺️☺️☺️🙂🤔🤔🤔🤔🧐

[@PANKAJKUMARSINGH-qh2sg]

15:21 - OPTION B 🗿Motion🗿
18:05 - 🗿Rough Surface🗿
35:37 - OPTION B🗿Smaller🗿
50:02 - OPTION B 🗿Decreases🗿
52:02 - 🗿Pull🗿

[@gamingakdey5723]

Q1)..(b) motion
Q2)...rough surface
Q3)....(b) smaller
Q4)...(b) decreases
Q5) pull

[@mrs.urmilapatidar5367]

15:26 motion
18:06 rough surface exert more motion
35:39 smaller
49:56 decreases

[@kingofthegames3629]

Motion

[@melodymonsters]

thank you sir you're teaching in a most facinating way that I find it very interesting and understandable😀

[@ron4ie]

Repta maru ek tujhe

[@melodymonsters]

h@@ron4ie sale chaman chut chapri launda kuch parna nahi hai tuje bhenchaud

[@freegyan9493]

15:05 - (B) Motion

[@ShubhamYadav-dz6cs]

Both (A) and (B) hoga bro

[@freegyan9493]

@@ShubhamYadav-dz6cs nhi bro (B) motion hoga

[@drawpee]

18:00 smooth surface

[@ekansh0001]

15:56 Motion
35:17 smaller
49:49 decrease

[@jnvstudent2180]

Thank you sir for this amazing explanation 👍

[@Jp_gam]

[@ishikasuniverse3137]

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]

Frrf🎉😊😅😅😮😮😅😊😊😊😮😢😢😢

[@KeshavTiwari-u5y]

Kon kon test ke liye dekh rahe h😂😂😂

[@archanasaxena9839]

1. Motion
2. Smaller
3. Decreases
4. Rohan felt because lack of friction, and the banana peel is very smooth and ther is no irregularities due to less irregularities the rohan felt.
Thanks sir,
The session was amazing.

[@user-cv1xw3yo8e]

Rohan fell*

[@bestgemers7895]

1-motion

[@kamleshkumargupta1824]

Decreases

[@Toofangaming00x]

15:12 (b) motion ❤

[@vgaming8277]

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]

Same

[@darfayazdardar3026]

Same

[@Otaku-w5q]

Same

[@gobindabiswas6646]

Same

[@alyssarosiex]

I'm also in 8th now, but watched the videos earlier😃

[@chhl10]

15:15=motion
35:35=smaller
50:10=decrease

[@jayshankarrai8425]

❤

[@gyanendrapandey3735]

In rough surface we applied more force

[@shaswattripathi5217]

1:04:01 thank you alok sir ❤

[@vickyyadav7000]

The answer of 1st question is Motion

[@rupadeb9164]

Next level explanation❤❤❤

[@Aditi.1994]

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]

Thanks

[@vishambarsharma5958]

KON KON 2024 ME DEKHNE AAYA H

[@SanjayYadav-zj6xq]

1. motion
18:05 = rough surface
2. smaller
3. decreases
Now Rohan's Case = banana peel is a very slippery thing. Rohan slipped because of crossing banana peel by his foot.
reason is the less friction

[@000xyz96]

6

[@nirmitbaria4155]

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]

Good boy😅😅

[@kashiplays7028]

Watched this vid before my exam and i got 94% 😭

[@nigsolff7887]

So what is bad with 94 percentage

[@lmpckm]

Don't worry baby I got 97.9 % in my exam

[@Zareenmughal_123]

Toh l*l
Es m kya hai 😂😂😂😂

[@gurdevsingh4770]

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]

😢😢

[@Reactjokes]

Achaa😂

[@Shuu137]

Yrr kaisee😢

[@matlabiduniya339]

High friction

[@user-ho1mk3vt4l]

❤❤❤❤

[@ShikharAasal]

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]

Exactly you are right Rohan fell because banana's peel worked as ice sheet and because of non irregularities

[@naveeshnehra4830]

Yes are right

[@Shakirakhatoon1975]

right ✔️

[@virndrasarojsaroj8926]

Right sir

[@s-i-xgaming7108]

Uske ankh kharab thi yr 🙄

[@Ayush11086]

I am seeing this video in 1.25x

[@vedprakash8017]

Me too

[@adarshkumar8939]

Me in 2x 😎😎😎😎😎😎

[@kakashi45325]

Q1-motion
Q2-rough surface
Q3-smaller
Q4-decreases
Q5-pull force

[@SyedahShumaisaTasaduq]

as banana peel reduces friction and is smooth and rohan`s shoes aren`t able to interlock so he falls

[@vanshdagur2868]

18:02 rough surface will take more force

[@imperialx8787]

1) Motion
2) Rough need more force
3) smaller
4) Decrease
5) Pull (Rolling friction)
The answer of the final answer / investigation is that
Rohan fall by stepping on banana because as banana's surface was smooth means having less irregularities making the friction reduce and that's why by stepping on smooth surface and surface containing less irregularities his leg slip and he fall.

[@basantkumarjha1247]

Same

[@Golden_visions]

15:51 motion ❤

[@pankajchoudhary3199]

1, Motion
2,Smaller and
3, decrease
Thank you soo much sir for sharing this video❄

[@lavishsainisaini158]

Hlo 34:33

[@shashikalafirozia2906]

1.motion
2. Smaller
3. Decrease
Rohan fall because the banana peel makes the surface smooth, so friction between rohan feet and ground decrease.

[@Peace-cc7mq]

Mai hi kyu....????

[@user-kn1sj1yu7f]

1.motion
2.smaller
3.decreases........
Rohan slipped because Banana peel has a smooth surface so ,it has less irregularities on it , the force acting here is sliding friction and the opposing force acts on the opposite direction.......

[@pinkydevi9858]

First stage: motion
Second stage: smaller
Third stage: decrease

[@VikramMishra95]

Answer of question 1 - Motion
Answer of question of factors affecting friction - We have to apply more force to slide rough surfaces rather than smooth surfaces
Answer of question 2 - Smaller
Answer of question 3 - Decreasing
Answer of question of wheels reduce friction - the force applied by that kid is pull to mive the trolley bag
Result of our investigation - Our friend Rohan slip when he put his leg on peal of banana as banana peal is very smooth which reduces the friction plus there is juice (liquid) of banana which acts as a lubricant to reduce friction
Lecture done 💯 Thanks you respected sir and a very thanks to readers.
Bye.

[@ANKIT-bk6wg]

Bro konsi class main ho

[@VikramMishra95]

@@ANKIT-bk6wg 8th and you?

[@ANKIT-bk6wg]

@@VikramMishra95 Very Good English

[@VikramMishra95]

@@ANKIT-bk6wg Thanks bro but you didn't tell you class

[@ANKIT-bk6wg]

@@VikramMishra95 10th

[@dhruvesharma8466]

15:05 - b) Motion
35:29 - c) Smaller
49:53 - b) Decreases

[@SHANU_editerz_rj05]

Motion

[@kanhaiyalal5993-s7n]

Q1, 15:53=(b)
Q2,18:03=rough surface
Q3, 35:26=(b)
Q4,50:27=(b)
Q5,51:57= decrease
3:40Rohan was fall because
the peel of banana was
smooth and the his
shoes were not able to
making grip and reduce the
friction

[@javedhashmivolog1392]

1.Motion
2.Smaller
3.Decrease
Rohan fall bcz Banana peel is smooth and drag force is decrease

[@piyushkuchawa123]

Stage 1 ~motion
Stage 2 ~sliding
Stage 3 ~decreases

[@xwgamer0294]

Legend are watching onday before their exam😂😂😂

[@D.Jeshwan]

yes bro me also tommorow is my exam

[@Atenx_69]

Kese gae tum dono ke examss

[@d_jondhale]

Me toooo

[@WrestlingWithMaths28]

Q1. B. Motion
Q2. B. Smaller
Q3. B. Decreases

[@mohammadjahangir5824]

Q1 (b) Motion
Q2 (b) smaller
Q3 (b) Decreases
Thank you sir☺️

[@faizanaselonmusk9204]

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]

Motion

[@rajeshpal3887]

Questions no 1 ka answer ----motion
Question no. 2 ka answer ----greater

[@ayushigoswami6275]

GOOD EVENING SIR
ANSWER - 1 MOTION
ANSWER - 2 SMALLER
THANK U SO MUCH SIR TO GIVING THE OPPORTUNITY TO INVESTIGATE THIS CASE.

[@Trendingcreator169]

😊😊 good

[@madhuyadav9601]

Thinkin you bar

[@kumaransuman6205]

1) Friction opposes the motion between the surfaces in contact with each other.
:- Rough surface
2) Sliding friction is smaller than the static force.
3)Sprinkling of powder on the carrom board decreases friction.
:-Pull

[@vijaykumarsingh2941]

Ledha

[@devilgaming-pj5fx]

Motion

[@kumaransuman6205]

@@devilgaming-pj5fx 👍
I wrote it when I was in 8th

[@sapnaarora8114]

☺️Thanks sir for this fabulous lacture ☺️

[@dschaun577]

Motion ha na

[@darmusabir5898]

I love ❤you

[@chandramauli6666]

Q1=motion
Q2=smaller
Q3=decreases
And rohan fall because banana peel
Is smooth and friction decreases
Friction
Thank you very much sir

[@zubedhamohammad3957]

Ap konsi class?

[@manasidwivedi8212]

Q1) b ) Motion
Q2) b ) smaller
Q3) b ) decreases
Thank you sir for teaching us !!

[@minefact01]

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]

😅😂 1:03:29

[@h12345bsr]

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]

or rohan ka luck bhi kharab tha😔

[@SahilbhaiXe_66]

Motions

[@i.rprateek]

THANK YOU SIR FOR GOOD EXPLANATION
ANSWERS OF THE FOLLOWING QUESTIONS ARE AS FOLLOWS:-
1. (B) MOTION
2. (B) SMALLER
3. (B) DECREASES
by Prateek

[@theallrounderAM]

15:05 Q1. Motion
35:15 Q2. Smaller

[@ll_sachin_gupta_ll]

18:03 Rough Surface

[@abuhurairaswati924]

Is sliding friction smaller or rolling friction

[@gsjgdkgdhksg]

Rolling

[@imtezshaikh3012]

Q1- motion
Q2- smaller
Q3- decrease
Thank you sir 🙏🙏

[@user-fn5tj2kk2g]

Legends watching before 1 hour of exam 😂😂

[@jennysarangi3516]

15:14 B. Motion
18:02 rough

[@-srishti79]

Kal kiska kiska exam ha 😂😂

[@mokshmahajan5656]

Ma

[@manishkartikcubersking9794]

Note Kar rahe hai sir
Very much good afternoon 🌞 sir
Your lecture is very very nice 👍👌👍👌👍😊😊👍👍😊😊😊 sir