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# Given in the figure are two blocks A and B of weight

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 :-

1. $120 \mathrm{~N}$

2. $150 \mathrm{~N}$

3. $100 \mathrm{~N}$

4. $80 \mathrm{~N}$

Correct Option: 1

Solution: