FrictionHard
Question
Given in the figure are two blocks A and B of weight 20 N and 100 N, respectively. These 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 :-
Options
A.120 N
B.150 N
C.100 N
D.80 N
Solution
for equllibrrium of A
f1 = 20
for equllibrrium of B
f2 = f1 + 100
f2 = 120 N
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