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Question

Neha has to push a lighter box such that the lighter box just moves and Sohit has to push a heavier box such that the heavier box just moves on the same floor. Who will have to apply larger force?


A

Neha.

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B

Sohit.

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C

Both have to apply the same force.

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D

They don't need to apply any force.

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Solution

The correct option is B

Sohit.


In this case, frictional force depends on the weight of the object which is being pushed on the surface. Heavier the object, larger is the normal force applied on the surface. We know the magnitude of friction depends also on normal force. As both Neha and Sohit are pushing the object on the same floor, Sohit will have to apply a greater force as he is pushing a heavier box.


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