Question

A ball can roll comfortably on rough surface,why?

Answer 1

Answer:

When a ball is allowed to roll on a rough horizontal surface, no static or kinetic frictional force acts on it.

Rolling friction occurs because the objects in contact are not perfectly rigid.

Ideally, when a ball is placed on a rough surface, only one point of the ball touches the ground.

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Answer 2

Answer:

A sphere rolling on a horizontal rough surface collides elastically with a smooth vertical wall, as shown in Figure. ... After collision the friction the linear force acts on the sphere such that it decreases the linear speed and increases the angular speed.

Explanation:

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