SOLVED IN A SINGLE-STEP CONCEPT OF AVERAGE POWER A LENGTHY PROBLEM FROM PATHFINDER CHAPTER 4

[@enjoybro8427]

Sir I have fallen into love with physics , before that day I was like a student who just wants to score good in physics, but , recently after understanding how our nature behaves and " NATURE IS PHYSICS " i really fallen into relationship with physics,,, I have solved many jee advanced questions recently which wasn't possible for me before, and you have such an awesome understanding of physics 👏 love you sir ❤

[@PHYSICSSIRJEE]

Welcome to the club ❤️🥳

[@akarshsahay4381]

This question which sir solved was also done using a different mathematical approach. How did u learn how the nature works through this video where he has just done some clever math to reduce the work.

[@atikshagarwal2649]

You are not alone. Sir made me love physics too❤️ Thank you sir

[@bushraparween449]

@@atikshagarwal2649 +1

[@arka7324]

The other approach is easy too,and that's why it's easy to skip this beautiful approach while doing this the first time.Thanks Sir.

[@PHYSICSSIRJEE]

True 😊

[@sudhirsingh1678]

What is other approach??

[@PHYSICSSIRJEE]

@@sudhirsingh1678 using COLM ,finding final velocity. Use work energy theorem to get heat evolved. Divide it with time duration found from kinematics

[@yatharthgupta6468]

@@PHYSICSSIRJEE sir we have to find work done by friction on both seperately and then add and then divide by time..right?

[@PHYSICSSIRJEE]

@@yatharthgupta6468 Yes , or change in KE of both directly is anyway work done by friction. Finding time is a separate calculation

[@ANURAGGUPTA-fe4ek]

Very nice and elegant solution . I too solved the question with same approach

[@anantshukla3415]

Hello sir I'm a 2022 aspirant.. The way you presented the solution was awesome ... Can you make a separate video on a list of relevant ques from pathfinder for jee advanced.. it will be a big help.

[@PHYSICSSIRJEE]

It's a big work , I will plan it post July 03 , ONCE my students JEE advanced is done

[@anantshukla3415]

@@PHYSICSSIRJEE ok thank you sir that would be great

[@Dorddis]

@@PHYSICSSIRJEE Sir how can I be your student? I will also write jee adv 2021

[@prithujsarkar2010]

very nice idea

[@PHYSICSSIRJEE]

Thank you, keep watching 🙂👍🏼

[@ShivamKumar-dv2gt]

Mind blowing sir!!!

[@yatharthgupta6468]

Sir did it in similar way..since we know heat dissipated is independent of frame..i went into frame of M, therefor pav heat dissipation = average

[@simisimi9362]

Thank you sir. The approach that you have discussed in this video is just amazing. 🙌🙌🙌

[@tanveer9098]

Even finding new things while revising you are amazing Revised 5 jan

[@Chole67767bhature]

Thank u sir🙏🙏👌👌

[@sohammanna9090]

Great method sir 🙂👍👍

[@babulsy6460]

Brilliant, splendid 👍

[@ManavNair-l1l]

Sir i have a small doubg why dont we consided the final velocitg of the plank since it also has frictional force acting on it in the forward direction

[@PHYSICSSIRJEE]

Time stamp of your doubt please?

[@ManavNair-l1l]

​@@PHYSICSSIRJEE it's at 4:33 sir

[@physicsmyths8887]

@@PHYSICSSIRJEEsame doubt sir

[@Johan_511_Kinderheim]

No words 👏👏👏❤❤

[@nagasasikala4498]

Janardhan sir where did we use the idea being velocities are linear functions of time.

[@maitrekpatel8476]

When a=constant

[@udaychauhan395]

amazing solution.

[@bhaveshsanghvi713]

Sir can we just say that instantaneous power/2=average power(moderately long derivation) and so option A directly? Is this approach right?

[@PHYSICSSIRJEE]

Yes , works here because initial power is zero 👍

[@bhaveshsanghvi713]

👍👍yes sir

[@arpittttt]

​@@bhaveshsanghvi713what's ur jee rank

[@freefiregaming5284]

#jee advance 2023

[@shloksand2926]

Brilliant

[@yeetmeet]

average value of a function (linear) is arithemetic mean

[@lijojosef]

Sir this is all amazing stuff 👌❤

[@MadhuSharma-er1de]

awesome trick sir :)))

[@alphaiitd1]

Thanks sir

[@Rishabh-se5yo]

Thanku so much sir 💚🙂🙂

[@chakradhar5884]

Nice

[@ggxsky4811]

I solved it work done by friction and time

[@srisaisubramanyamdavanam9912]

I too got using only one step sir. Because I know that avg velocity=u+v/2 V=0 Is this right sir that we can directly write it

[@srisaisubramanyamdavanam9912]

I'm getting avg power dissipated by plank is 0. Is it true sir

[@endlesseducation2845]

#13 For my revision

[@vedantjadhao8117]

Second aproach is quite lengthy. One silly mistake can ruin whole answer ❤️❤️❤️❤️

[@VsEdits59]

sir this can be done by normal method also na sir ...taking only upper one as system work by firction on anaverage time and divide by t getting same answer sir..

[@PHYSICSSIRJEE]

Yes , no problem . You can do it that way too as I mentioned in the video. But total work done has to be calculated and not just on upper block

[@VsEdits59]

@@PHYSICSSIRJEE oh sry sir ante ikkada value of work by friction on upper and dwonone are not same ..point of action displacements arew not same ..diff velocitites kada ..anduke na sir ?

[@PHYSICSSIRJEE]

@@VsEdits59 Yes 👍🏼🙂

[@JaySingh-rq8ys]

sir why gave a negative sign in the thermal Power eq.

[@PHYSICSSIRJEE]

Power delivered by kinetic friction is negative and it's magnitude here is "the thermal power dissipated"

[@kishan_kashyap21]

❤️🔥

[@aniketsen6845]

Sir please upload more videos

[@techandmotivation6843]

Sir, me having many problems in physics can u help me..

[@yush742]

Sir where can I learn more about this trick

[@PHYSICSSIRJEE]

You may look forward to using this similar idea wherever average of a linear function is asked

[@yush742]

Sir are you on Unacadmey

[@srisaisubramanyamdavanam9912]

I'm getting avg power due to frictional force on only plank is zero sir. Is it true

[@PHYSICSSIRJEE]

It shouldn't be . I think it's positive

[@nimitjain8163]

great approach sir. ur videos have helped me fall in love with physics. watched 16/12/2021

[@physicsisdope4892]

Done #14 April 10

[@Don-ir9vp]

gamsahabnida

[@srinivasacharya1426]

Sir can upload pdf of path finder

[@beluga2841]

Sir why doesent pathfinder playlist on your channel have all vids, moreover please arrange them chapterwise. It takes more time to search the vedio than to solve the problem

[@PHYSICSSIRJEE]

Arranging chapter wise for Pathfinder is good idea. I will look into it when I am free. All Pathfinder videos I have done in the playlist only.

[@souravvishwakarma5456]

❤️❤️❤️

[@beluga2841]

What's the other method?

[@PHYSICSSIRJEE]

Please scroll down in comments, you may understand

[@RUV554]

Your problems is very hard

[@PHYSICSSIRJEE]

Keep watching , it will get easier 🙂👍🏼

[@RUV554]

@@PHYSICSSIRJEE sir how can I master physics? I can handle jee main problem but I can't handle jee advance problem.....how prepare.....????confuse.

[@PHYSICSSIRJEE]

@@RUV554 prepare for JEE mains and JEE advanced first using pyqs . You will know your position. Watch the videos of this channel in sequence ( 4 to 5 videos per day )