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A block weighs W is held against a verti...

A block weighs W is held against a vertical wall by applying a horizontal force F. The minimum value of F needed to hold the block is

A

less tha W

B

Equal to W

C

Greater than W

D

Data is insufficient

Text Solution

Verified by Experts

The correct Answer is:
C

Here applied horizontal force F acts as normal reaction. For holding the block
Force of friction`=`weight of block
`f=WimpliesmuR=WimpliesmuF=W`
`impliesF=(W)/(mu)`
As `mult1` `because` `FgtW`
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