A body of mass m is kept on a rough horizontal surface of friction coefficient m. A force P is applied horizontally, but the body is not moving. Find the net force F exerted by the surface on the body.

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Solution

R.E.F image
Net force exerted by surface is
$F = \sqrt{N^{2} + f^{2}}$
$F = \sqrt{(m g)^{2} + p^{2}}$

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A body of mass m is kept on a rough horizontal surface of friction coefficient m. A force P is applied horizontally, but the body is not moving. Find the net force F exerted by the surface on the body.

R.E.F image Net force exerted by surface isF=√N2+f2F=√(mg)2+p2

R.E.F image
Net force exerted by surface is
$F = \sqrt{N^{2} + f^{2}}$
$F = \sqrt{(m g)^{2} + p^{2}}$