A sphere is moving on a smooth surface with linear speed `v_(0)` and angular velocity `omega_(0)`. It finds a rough inclined surface and it starts climbing up:
A. if `v_(0)gtRomega_(0)` friction force will act downwards
B. if `v_(0)ltRomega_(0)`, frictio force will act upwards
C. if `v_(0)=Romega_(0)` no friction force will act
D. if all above case friction will act upwards
