A cord is wound round the circumference of wheel of radius r , The axis of the wheel is horizontal and the moment of inertia about it is I . A weight m g is attached to the cord at the end. The weight

Question

A cord is wound round the circumference of wheel of radius r , The axis of the wheel is horizontal and the moment of inertia about it is I . A weight m g is attached to the cord at the end. The weight falls from rest. After falling through a distance h , the square of angular velocity of wheel will be

TestHub · Accepted Answer

m g h = 1 2 I ω 2 + 1 2 m v 2 v = ω r m g h = 1 2 I ω 2 + 1 2 m ω 2 r 2 2 m g h I + m r 2 = ω 2

Physics - Rotation Question with Solution | TestHub

Options:

Doubts & Discussion