Three objects, A : (a solid sphere), B : (a thin circular disk) and C : (a circular ring), each have the same mass M and radius R. They all spin with the same angular speed about their own symmetry axes. The amounts of work (W) required to bring them to rest, would satisfy the relation
As we have learned
Kinetic energy of rotation -
- wherein
= moment of inertia about axis of rotation
= angular velocity
work energy theorem states that work done =change in kinetic energy
Option 1)
This is incorrect
Option 2)
This is incorrect
Option 3)
This is correct
Option 4)
This is incorrect