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A block of mass m lying on a rough horiz...

A block of mass `m` lying on a rough horizontal surface of friction coefficient `mu` is pulled by a force `F` as shown , the limiting friction between the block and surface will be

A

`mu` mg

B

`mu [ mg + ((p)/(2)) ]`

C

`mu [mg - ((p)/(2))]`

D

`mu [ mg - ((sqrt3P)/(2)) ]`

Text Solution

Verified by Experts

The correct Answer is:
C
f = P cos `30^(@)`
`implies mu (mg - P sin 30^(@)) = P cos 30^(@)`
`f = mu (mg - (P)/(2))`
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