Question: A horizontal force of $10 \mathrm{~N}$ 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-
$20 \mathrm{~N}$
$50 \mathrm{~N}$
$100 \mathrm{~N}$
$2 \mathrm{~N}$
Correct Option: , 4
Solution:
