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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

(a) 20N

B

(b) 50N

C

(c) 100N

D

(d) 2N

Text Solution

Verified by Experts

The correct Answer is:
D
For the block to remain stationary with the wall
`f=W` `:.` `muN=W`

`0.2xx10=WimpliesW=2N`
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Knowledge Check

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

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