Two disc with same mass but different radii are moving with same K.E. One of them rolls and other slides without friction. Then
Rolling disc has greater velocity
Sliding disc has greater velocity
Both have same velocity
The disc with greater radius will have greater velocity
As we learnt in
Rolling of a body on an inclined plane -
- wherein
K=Radius of gyration
= Angle of inclination
Sliding disc has greater velocity.
Option 1)
Rolling disc has greater velocity
Incorrect
Option 2)
Sliding disc has greater velocity
correct
Option 3)
Both have same velocity
Incorrect
Option 4)
The disc with greater radius will have greater velocity
Incorrect