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Question

A body A of mass 1kg rests on a smooth surface. Another body B of mass 0.2kg is placed over A as shown. The coefficient of static friction between A and B is 0.15. B will begin to slide on A, if A is pulled with a force greater than :
670059_9098d3d5716c481d8b87d9c91c80d7e8.PNG

A
1.764N
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B
0.1764N
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C
0.3N
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D
It will not slide for any F
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Solution

The correct option is A 1.764N
B will begin to slide on A, if psuedo force is more than limiting friction
F>F1m(Fm+M)>μ0mg
m(Fm+M)>0.15mg
F>1.764N

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