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A block of mass m is on an inclined L pl...

A block of mass m is on an inclined L plane of angle 0. The coefficient of M, friction between the block and the plane is `mu and tantheta gt mu`. The block is e held stationary by applying a force P parallel to the plane. The direction of force pointing up the plane is taken to be positive. As P is varied from `P_(1)=mg(sin0 -mucostheta)"to" P_(2)= mg(sintheta + mucostheta)`, the frictional force f versus P graph will look like

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
a
Initially the friction force is upward as `P lt mg sin theta` .As `P` increases frictional force decreases and at value of `P= mg sin theta` friction will be zero Afterward friction will the direction and start increasing
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