Question

, if the round object is not a disk but a ring I=mR^2, the acceleration will be?

1 : same

2 : smaller

3 : larger

4 : depend on the inertia of the object

5 : depend on the angle of the slope

Answer 1

If the same torque is applied to a disk ($I=mr^2/2$) and ring of same mass and radius, the acceleration will be smaller for the ring.