The force of friction between the surface of a floor and the surface of a box in contact with the floor in 200N. We wish to move the box on the floor with constant velocity. How much force has to be applied on the box?

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Solution

Dear Student ,
As here the box will move with constant velocity if no external force acts on the body .Thus the effect of force of friction is to be balanced .So a force of equal to the force of friction that is 200 N but opposite in the direction is to be applied on the box to move it with a constant velocity .So the applied force on the box is 200 N .
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