Confusing Physics Problem

Started by Spiker
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Spiker

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A 285 kg piano slides 4.5 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.

Calculate the force exerted by the man.
Calculate the work done by the man on the piano.
Calculate the work done by the friction force.
What is the work done by the force of gravity?
 
A 285 kg piano slides 4.5 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.

Calculate the force exerted by the man.
Calculate the work done by the man on the piano.
Calculate the work done by the friction force.
What is the work done by the force of gravity?

NVM figured it out... read the problem wrong