Q.

Two blocks A and B masses mA = 1 kg and mB = 3 kg are kept on the table as shown in figure. The coefficient of friction between A and B is 0.2 and between B and the surface of the table is also 0.2. The maximum force F that can be applied on B horizontally, so that the block A does not slide over the block B is :[Take g = 10 m/s2]

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a

8N

b

40N

c

16N

d

12N

answer is B.

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