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A block of mass M is held against a roug...

A block of mass M is held against a rough vertical wall by pressing it with a finger . If the coefficient of friction between the block and the wall is `mu` and the acceleration due to gravity is g , calculate the minimum force required to be applied by the finger to hold the block against the wall.

Text Solution

Verified by Experts


For the block not to fall f=Mg
But `f=mu R=muF so`
`muF=Mg`
`F=(Mg)/(mu)`.
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