The effective coefficient of kinetic friction is 0.40., Ask an Expert

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A 330-kg piano slides 3.6 m down a 28º incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see Fig. 6-36, from chapter 6). The effective coefficient of kinetic friction is 0.40. Calculate the force exerted by the man.Give your answer in Newtons, do not enter units.

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