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What is the value of the force vecF to b...

What is the value of the force `vecF` to be applied horizontally on a block of mass 5 kg which is in contact with a wall, as shown in the figure. (Take g = 10 `m//s^(2)`) such that it does not fall down. The coefficient of friction between the block and the wall is 0.4.

A

200 n

B

20 n

C

12.5 n

D

125 n

Text Solution

Verified by Experts

The correct Answer is:
D
To stop the block falling frictional force = Normal force But N= mg `mu F = mg ( :. ,` Frictional force =`mu N ` and ` N = F`)
`F = (mg)/( mu)`

Applied force `=((5)(10))/( 0.4) = 125 N`
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