Suppose you find that a horizontal force of 19.6 N is just sufficient to pull a 10 kg box across a horizontal floor at a constant speed of 2 m/s. What is the coefficient of friction between the box and the floor?
Added by Manuel V.
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We know that the box is moving at a constant speed, which means that the net force acting on it is zero. Therefore, the force of friction must be equal and opposite to the applied force of 19.6 N. Show more…
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