A horizontal force of 10 N is necessary ...

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))`

20N

50 N

100 N

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The correct Answer is:

Force `F=muR=mg`
weight of block `=muR=0.2xx10=2N`

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