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A horizontal force of 10N is necessary t...

A horizontal force of 10N is necessary to just hold a block stationary against as well. The coefficient of friction between the block and the wall is 0.2. The weight of the block is

A

2 N

B

20 N

C

50 N

D

100 N

Text Solution

Verified by Experts

The correct Answer is:
a
If block does not slide, the friction between the block and wall should be static in nature. This friction force prevents the block from sliding on the wall. From F.B.D of the block
f=mg
`rarr mg le muN rarr mg le 0.2 xx10 or mg lt 2N`
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