A block of weight $W$ is kept on a rough horizontal surface (friction coefficient $\mu$). Two forces $W/2$ each are applied as shown in the figure. Choose the $CORRECT$ statement :-
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$\mathrm{N}=\mathrm{W}+\frac{\mathrm{W}}{2}-\frac{\mathrm{W}}{4}=\frac{5}{4} \mathrm{W}$
$\frac{5}{4} \mathrm{W} \cdot \mu=\frac{\mathrm{W}}{2} \cdot \frac{\sqrt{3}}{2} \Rightarrow \mu=\frac{\sqrt{3}}{5}$
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