A piano of 350 kg slides 35 m down a 27 degree incline and, Ask an Expert

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A piano of 350 kg slides 3.5 m down a 27 degree incline and is kept from accelerating through a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. Compute the force applied by the man, the work done by the man on the piano, the work done by the friction force, the work done by the force of gravity, and the total work done on the piano.

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