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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 Wall is u and the acceleration due to gravity is g, calculate the minimum force required to be applied by the finger to held the block against the wall?

Text Solution

Verified by Experts

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