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Byju's Answer

Standard XII

Physics

Friction General Understanding

A rolling bod...

Question

A rolling body is kept on a plank B. There is sufficient friction between A and B and no friction between B and the inclined plane. Then body

A rolls

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A does not experience any friction

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A and B has equal acceleration and unequal velocities

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A rolls depending upon the angle of inclination

θ

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Solution

The correct option is B A does not experience any friction
As there is no friction between the between plank B and the incline. It would slide down with an acceleration $g s i n θ$ . The gravity force is the only force which acts on the plank and also on the sphere. There is no other acceleration acting on the two bodies thus there is no relative motion between them and no frictional force acts on A.

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