- #1
dominus96
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Homework Statement
A man pushes an 80 N crate a distance of 5.0 m upward along a frictionless slope that makes an angle of 30° with the horizontal. The force he exerts is parallel to the slope. If the speed of the crate is constant, then the work done by the man is:
a) 61 J
b) 200 J
c) 140 J
d) -200 J
Homework Equations
F=ma
The Attempt at a Solution
I used sin 30 = y/50, so y (the height of the slope) equals 2.5. I don't know what to do from here.