Given in the figure are two blocks A and B of weight 20 N and 100N respectively. There are being pressed against a wall by a force 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 :
[JEE Main Solved Paper-2015 ]
A) 120 N
B) 150 N
C) 100 N
D) 80 N
Correct Answer: A
Solution :
F = 120 F = 120 If the system is not acceleration
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