A solid sphere is kept over a smooth surface as shown in figure. It is hit by a cute at height h above the centre C. If the surface is rough, then after hitting the sphere, in which case the force of friction is in forward direction.

A solid sphere is kept over a smooth surface as shown in figure. It is

1.	A solid sphere is kept over a smooth surface as shown in figure. It is hit by a cute at height h above the centre C. If the surface is rough, then after hitting the sphere, in which case the force of friction is in forward direction.
Answer» In CASE 1 In case 2 In both the cases In NONE of the cases Answer :B