For the given figure, if block remains in equilibrium position then find frictional force between block and wall ........ $N$
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$\begin{array}{rl}{\mathrm{F}=\mathrm{N}=1000 \mathrm{N}} & {\mathrm{f}_{\mathrm{L}}=1000 \times 0.1=100 \mathrm{N}} \\ {\mathrm{F}_{\mathrm{req}}=50 \mathrm{N}(\mathrm{mg})} & {\because \mathrm{f}_{\mathrm{req}}<\mathrm{f}_{\mathrm{L}}} \\ {\therefore} & {\mathrm{f}_{\mathrm{req}}=50 \mathrm{N}}\end{array}$
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