Physics - Rotation Question with Solution | TestHub
PhysicsRotationMiscellaneousMedium2 minQB
PhysicsMediumsingle choice
Passage / Comprehension
A block of mass M slides on a smooth incline. The compound pulley has moment of inertia . A brakeshoe can press against the pulley. The normal force on the brakeshoe is 2Mg and the coefficient of friction is . Initially the block is at rest and the pulley rotates on a frictionless pivot.
Initially at , the brakeshoe is not in contact with the pulley. Find the acceleration of the block down the incline.
Options:
Answer:
C
Solution:
The string acts at radius R while the compound pulley has I=2MR².
Mg sin37°-T=Ma and TR=I(a/R).
Thus 0.6Mg=3Ma, giving a=0.2g=2 m/s².
Stream:JEESubject:PhysicsTopic:RotationSubtopic:Miscellaneous
⏱ 2mℹ️ Source: QB
Doubts & Discussion
Loading discussions...
