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QUESTION
A 350 piano slides 3.8 down a 31 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure ).
A 350 piano slides 3.8 down a 31 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure ). The effective coefficient of kinetic friction is 0.40.
