Question

what are the conditions nessasary for frictional force to act?​

Answer 1

Answer:

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Explanation:

Friction arises in part because of the roughness of the surfaces in contact, as seen in the expanded view. In order for the object to move, it must rise to where the peaks can skip along the bottom surface. Thus a force is required just to set the object in motion.

Answer 2

Answer:

If an object is placed against an object, then the frictional force will be the same as the weight of the object. If an object is pushed against the surface, then the frictional force will be increased and becomes extra than the weight of the object.

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