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A block of mass m is pressed against a w...

A block of mass `m` is pressed against a wall which is moving with an acceleration a as shown in figure If the block is pulled at an angle `theta` with downward vertical by a force `F` and it does not slide relative to the wall . Find the
a. friction force between the block and wall
b.inimum magnitude of `F` so as to cayse a relative sliding between the block and wall

Text Solution

Verified by Experts

`(a) =f=sqrt(F^(2)+m^(2)g^(2)+2Fmg costheta), (b)
F=-mgcostheta+sqrt(m^(2)g^(2)cos^(2)theta-m^(2)(g^(2)-mu^(2)a^(2))`
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