- #1
lemonlee
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Homework Statement
a 380 kg piano slides 3.9m down a ramp with an incline of 27* and is kept from accelerating by a man pushing parallel to the incline. Find the force exerted by the man, the work done by the man on the piano, the work done by the force of gravity, and the net work on the piano. Ignore friction.
Homework Equations
F=ma
W=F*d*cos27
The Attempt at a Solution
Once i get the force exerted by the man, I know what to do, I just can't get the right answer. I drew out a force diagram and then tried the equation, but can't get to the given answer of 1700N