I have pretty much figured out the problem, but i am unsure of my work.(adsbygoogle = window.adsbygoogle || []).push({});

the question reads:

a 330kg piano slides 3.6m down a 28degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. Calculate: (a) the force exerted by the man.

F=mgsin(theta)

=(330kg)(9.81m/s2)sin90

F= 3237.3 N

Is this the correct formula to use to find the force exerted by the man?

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# Homework Help: Work formula Problem

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