A horizontal force F pulls a 20 kg box at a constant speed along a rough horizontal floor. The coefficient of friction between the box and the floor is 0.25. The work done by force F on the block in displacing it by 2 m is
Text Solution
Verified by ExpertsThe correct answer is:
B
Frictional force acting on the box,
This force must be same as applied force F, so that the box moves with constant speed.
Work done by the applied force, 
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