Class 11 chap 5 | Friction Force 02 | Angle Of Repose | Friction on Inclined Plane | IIT JEE / NEET 

Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App. Download the App from Google Playstore ( bit.ly/2SHIPW6 ) Physicswallah Instagram Handle : instagram.com/physicswallah/ Physicswallah Facebook Page: facebook.com/physicswallah Physicswallah Twitter Account : twitter.com/PhysicswallahAP?s=20 Physicswallah App on Google Play Store : bit.ly/2SHIPW6 Physicswallah Website: physicswallahalakhpandey.com/ LAKSHYA Batch(2020-21) Join the Batch on Physicswallah App bit.ly/2SHIPW6 Registration Open!!!! What will you get in the Lakshya Batch? 1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey. 2)Live Classes and recorded Video Lectures (New, different from those on RU-vid) 3)PDF Notes of each class. 4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level. 5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture. 6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021) 7)In case you missed a live class, you can see its recording. 8)You can view the videos any number of times. 9)Each chapter will be discussed in detail with all concepts and numericals 10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams. ****Test Series for XI & XII**** We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year. The test series follows very logical sequence of Basic to Advance questions.& Evaluation of Test and Solution to all the questions at the end of the test. Class 11 chap 5 || Friction Force 01 ||Static and Kinetic Friction || Friction IIT JEE / NEET || ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-USBB7ttg_Zw.html Class 11 chap 5 | Friction Force 02 | Angle Of Repose | Friction on Inclined Plane | IIT JEE / NEET ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Hq8dokDswaI.html Class 11 chap 5 | Friction Force 03 | Block on Block Problems Friction | IIT JEE / NEET ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-HDhhi68vtws.html Class 11 Chap 5 || Laws Of Motion 01 || Newton's First Law Of Motion || NLM IIT JEE NEET NCERT ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-YzxUZzMrlfQ.html Class 11 Chap 5 || Laws Of Motion 02 || Newton's Second Law Of Motion || NLM IIT JEE NEET NCERT ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE--fBnD0fkYjY.html 11 Chap 5 || Laws Of Motion 03 ||Pulley Tricks For IIT JEE Mains || How To Solve Pulley Problems ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-YNdxmNNay0s.html 11 Chap 5 || Laws Of Motion 04 || Newton's Third Law Of Motion ||Conservation Of Momentum ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-vO4R-y3Lo-Q.html 11 Chap 5 || Laws Of Motion 05 || Spring Force || Spring Numericals|| JEE mains NEET All concepts ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ouaD1sBtMCY.html 11 Chap 5 || Laws Of Motion 06 || Pseudo Force | Inertial and Non-Inertial Frame of Refrence IIT JEE ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Ofzb23J4kJE.html 11 chap 4 || Circular Motion 06 || Motion in a Vertical Circle IIT JEE / NEET || Critical Velocity|| ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-e0Tty0V1q2U.html Motion Under Constraint || IIT JEE MAINS and NEET Physics || KINEMATICS Class 11 / JEE /NEET || ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Gq7HH_fxXAw.html

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37:37 if the block is sliding down, that means kinetic friction is acting on it. Then why aren't we using it's value to calculate the force needed to make the block stationary?

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41:15 sir waha toh likha hai ki moves with constant velocity but aapne toh F applied aur friction equal kar diye toh body to stationary rahegi na ki move hogi....? am I correct if not please explain me this

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Sir at 37:48 we get the limiting friction and it must only indicate that whether block slips or not; we get that the block slips,now in the upcoming equations we must be using kinetic friction as the block is under motion. In contrast ,you worked with the limiting friction itself. It'd be really helpful if you or someone helps me with this.

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Sir, at 38:06, we have calculated the minimum force for the block to remain stationary (when the friction and force are in the same direction). Since friction is self adjusting the friction can act upwards and downwards aswell. Therefore there will also be a case where Friction is opposite to the Force applied. Thus the force will be in a range. i.e 34N

36:11 Agar force lgane pr object rest pr aaya hai...iska mtlb pehle motion mein hoga object....jiska mtlb hai ki object pr kinetic friction act kr rhaa hoga toh phir f limiting kaise act kr rhaa hai??

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Question no 6 ya 7 33:25 Answer: kinetic friction (fk)=4.8 N , Acceleration is 1.6 m/sec ^2 ok

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26:16 ..there is one more way to solve this question without finding f limiting .here the value of tan theta is 2/5 which is less than 3/4(angle =37 degree) .so the angle will ofcourse also be less than 37 degree that is less than given angle ..thus angle of repose is less than the given angle and the body will be in motion ..am i right sir...

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35:23 Sir if it is in motion then why not Kinetic Friction acts on it ?

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34:29 :-most important part of the class. I have learned many new things in this part.

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3:36 sir u said that if cos theta is greater than value of Max friction is more greater than mgsintheta but if mew s (us) is 0.3 then it will be lesser than mgsintheta

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At 41:19 Sir,Force are equal and body does not move Kinetic Friction+F=52N

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(22:13) a= 3.5m/s²

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Sir 33:22 Mai hum 4N applied force to friction ke force me add kar ke solve kar sacte hai....kyuki answer same a raha hai.🤨

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32:24 problem net force act on = {Friction force+4} upward direction. Thanks®®®®

physics Teacher of the decade 2011 - 2021 Alakh panday sir ❤️

Sir question for last question 1st part :- If body is at motion and we want to stop the body, why we considering F(limiting) not f(kinetic) ?

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18:43 angle of repose example. 39:27 TRY AGAINNN!!! (reminder for myself 🤞)

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29:43 accn is 3.6 m/s2

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Sir last question Mai (2nd part) if we apply a force of 40N to keep it move with constant velocity... Won't it stop.. As 52-52=0...so net force on that body will be 0. Plz reply.... And thank u sir for ur efforts... I in 9th am able to understand an 11th concept jstbcoz of u..

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32:30 why we didn't add that external 4N in the frictional force...? Woh bhi toh friction ki tarah hi behave kar rahi hai na😥

Sir first of all thanks a lot for such a nice video but I have a doubt 40:45 agar dono side force magnitude same hai to first body downward kaise move karega?? Dono forces ek dusre ko cancel kar dengi na. Net force will be 0.

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in 40:58, both side forces equals to now 52=52, then how can it MOVE downward?? rather it will stay in without moving.

Sir aap basics toh acche se clear karte ho lekin questions a bit easy hote hain aapke . Please give some tough questions.

Sir impulse or law of conservation of momentum batao n.....