JEE Main & Advanced
Physics
Rotational Motion
JEE PYQ-Rotational Motion
question_answer
A pulley of radius 2 m is rotated about its axis by a force \[F=(20\,t-5{{t}^{2}})\] newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg \[{{m}^{2}}\], the number of rotations made by the pulley before its direction of motion if reversed is [AIEEE 2011]