Question

A block of mass m is
pressed against a vertical
wall by applying a force P at
an angle 0 to the horizontal
as shown. As a result, if
that block is prevented from
falling down and u is coef-
ficient of static friction
between the block and the
wall, the value of P=​

Answer 1

Answer:

From the FBD of block, we have

Pcosθ=N where N is normal reaction.

μN−Psinθ=mg

μPcosθ−Psinθ=mg

P=

μcosθ−sinθ

mg

Explanation:

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Answer 2

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