Question:
Given in the figure are two blocks A and B of weight $20 \mathrm{~N}$ and $100 \mathrm{~N}$, respectively. These are being pressed against a wall by a force $\mathrm{F}$ as shown. If the coefficient of friction between the blocks is $0.1$ and between block B and the wall is $0.15$, the frictional force applied by the wall on block B is :-
Correct Option: 1
Solution:
