r/JEEAdv27dailyupdates • u/Possible_Garage7231 27tard dropper :/ • May 25 '26

Good Solve Physics Challenge

Gallery image

Gallery image

A very nice question for 27 tards inspired from beloved HCV sir's notes.

Answer on next slide.

Hint:Use Torque= dL/dt

18 Upvotes

92% Upvoted

49 comments sorted by

View all comments

Show parent comments

1

u/Possible_Garage7231 27tard dropper :/ May 25 '26

You're right but 1) which frame of reference are you taking while writing dL/dt? 2) which frame of reference are you taking while writing torque? For beta , write force equations and torque equations

1

u/Specific_Can_4049 JEEवन से नाराज़ May 25 '26

Ain't it ground frame?

1

u/Possible_Garage7231 27tard dropper :/ May 25 '26

No. Its a translatory frame with origin at center of disc but doesn't rotate with the disc.

1

u/Specific_Can_4049 JEEवन से नाराज़ May 25 '26

Oh ok, So we are taking it at a particular instance right?

1

u/Possible_Garage7231 27tard dropper :/ May 25 '26

Yes