Is Friction Necessary for Rolling Without Slipping?

[andyrk]

Is frictional force necessary for rolling without slipping? If yes then does that mean that if we provide torque to a solid sphere on a frctionless surface will it nor rotate? I didn't understand that when does static frction arise and when does kinetic friction arise when a body is rolling withoout slipping or with slipping. Any explanation would be of great help!

 

[rcgldr]

Is frictional force necessary for rolling without slipping?

It's required if there's another external force, such as wind, or gravity on a sloped surface. If there are no external forces, then the idealized friction force (no losses) is zero.

If yes then does that mean that if we provide torque to a solid sphere on a frctionless surface will it not rotate?

It meas the sphere will spin without moving linearly.

when does static frction arise and when does kinetic friction arise when a body is rolling withoout slipping or with slipping. Any explanation would be of great help!

Rolling without slipping - static friction force (or zero force), ideally, no energy losses.

Slippage of any kind - kinetic friction, some energy is being converted into heat.