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A block A of mass 2 kg rests on another ...

A block A of mass 2 kg rests on another block B of mass 8 kg which rests on a horizontal floor. The coefficient of friction between A and B is 0.2 while that between B and floor is 0.5. when a horizontal force of 25 N is applied on the block B. the force of friction between A and B is

A

Zero

B

3.9 N

C

5.0 N

D

49 N

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The correct Answer is:
A
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