Friction is a self adjusting force. Justify.
CLASS - XI PHYSICS (Laws of Motion)
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Static force is called as self adjusting force. It is the maximum frictional force between any two objects when one object tends to move or slip over the surface of other object .Static friction comes into play when we try to move an stationary objects.It neither has magnitude nor direction. It adjusts according to the applied force.
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Static friction is recognised as a self-adjusting force because it wants the objects to remain at rest not move. Hence, if an external force is applied, the static friction force will be equal to the magnitude of the external force, until it surpasses the threshold of motion.
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