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Cause of Friction

A block of ma...

Question

A block of mass m is held against a wall by applying a horizontal force F on the block. If the coefficient of friction between the wall and the block is mu , then calculate the magnitude of frictional force acting on the block

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Solution

The normal reaction of the wall on the block is equal to the force applied, which is F.
Coefficient of friction is µ.
We know, frictional force = coefficient of friction Ã— normal reaction = µF

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