In Part C, there is no need to go into conservation of energy. The problem says that the contact is lost once the rolling starts over the barrier. That mean the value of cos theta is 2/3 from the geometry of the problem itself. In any event, cos theta obtained after minimizing v in the equation obtained post the conservation equation is not 2/3. Once cos theta is fixed at 2/3, N becoming zero in the force equations directly give a value of omega from which v and Vcm can be obtained. The conservation of energy steps is not required.
Thanks sir , i got that last ones mis placed just because of wrong calculation. It was just a aim of mine to send as fast possible which dragged me into this partiallity still when i checked it carefully i just found my mistakes and re sent you on the same day thanks sir ❤ Also thanks to my friend Akanksha who pointed out that silly calculation err
Sir my class 11th is wasted I joined offline with hope to secure under 100 rank but that coaching shut down and teachers didn't came to teach is it possible if I take your 2026 course and complete syllabus on time and maybe score under 100 rank?
Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)... I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
@@surajkumar-k2y6l Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)... I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
@@surajkumar-k2y6l Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)... I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)... I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)... I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)... I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
In Part C, there is no need to go into conservation of energy. The problem says that the contact is lost once the rolling starts over the barrier. That mean the value of cos theta is 2/3 from the geometry of the problem itself. In any event, cos theta obtained after minimizing v in the equation obtained post the conservation equation is not 2/3. Once cos theta is fixed at 2/3, N becoming zero in the force equations directly give a value of omega from which v and Vcm can be obtained. The conservation of energy steps is not required.
I have not seen any other online teacher taking this much effort.....🎉
So nice of you
Thanks sir , i got that last ones mis placed just because of wrong calculation. It was just a aim of mine to send as fast possible which dragged me into this partiallity still when i checked it carefully i just found my mistakes and re sent you on the same day thanks sir ❤
Also thanks to my friend Akanksha who pointed out that silly calculation err
Yo bro🔥🔥
Tum macha rhe ho...INSP ke group me bhi💯
Enjoyed attempting the problem it was a wonderful challenge even though i got none correct! time to revise rotational dynamics :) thank you SIRJEE!
That's the spirit! Keep practicing, you'll get there.
sir really a very nice solution, eagerly waiting for Diwali contest.
For part a shouldn't answer be( "given ans") -mgr/3 ? as there was gain in pe too ?
in part (a) why we did not consider gain in potential energy , as here loss in KE only taken
Hi sir, which smart board you have been using for video
Maxhub
Sir my class 11th is wasted I joined offline with hope to secure under 100 rank but that coaching shut down and teachers didn't came to teach is it possible if I take your 2026 course and complete syllabus on time and maybe score under 100 rank?
DM me in the 'sirjee doubts platform' app
sir, will you have a problem solving course for jee advance like your final step 2023 for 2025 too ?
Sir I've messaged you but you didn't replied ( sir i think I've also answered all 4 correct)
th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=fb_tsVMQontu_Lup
Follow this part clearly and DM 👆🏻
Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)...
I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest
th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
@@PHYSICSSIRJEE done sir you have spoked to me today thankyou so muchh sir
Sir ,I got all correct but submitted on 15th ,please have a look
@@surajkumar-k2y6l
Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)...
I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest
th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
@@surajkumar-k2y6l
Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)...
I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest
th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
I got 4 correct pls check them sir
13th October 1:20 pm
Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)...
I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest
th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
Sir I got a and c part correct
remember me i got all 4 correct
Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)...
I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest
th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz
Sir mene 15 oct ko 1:30am par submit Kiya tha plzzz consider it
It took my 2 3 hrs
Plzzzzzz
I will try to review some of the later submissions, but there were too many.
Please reply again in the DM of 'doubts app' to bump your solution post you sent to me. Clearly mention how many parts you got right and which course you want. I explained this clearly in the above video (check that snippet below in the link)...
I will look into and provide you either chapterwise reward and full course reward depending on the slots remaining after providing to students who sent Sol before cut-off. If the slots are over then you can wait for the Diwali contest
th-cam.com/video/dhdE1XS3cVg/w-d-xo.html&si=k6fH19blNKYrmPuz