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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

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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 `(g=10 m//s^(2))`
image
A. 20N
B. 50 N
C. 100 N
D. 2N
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Correct Answer - D
Force `F=muR=mg`
weight of block `=muR=0.2xx10=2N`
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