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QUESTION
A 250 kg piano slides 4.3 m down a 30 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36)....
A 250 kg piano slides 4.3 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36). The effective coefficient of kinetic friction is 0.40.
