a man pushes an 80-N crate a distance of 5m upward along africtionless slope tha

Question

a man pushes an 80-N crate a distance of 5m upward along africtionless slope that makes an angle of 30 deg. with thehorizontal. The force he exerts is parallel to the slope. If thespeed of the crate is constant, then the work done by the manis A)-200J B)61J C)140J D)200J E)260J a man pushes an 80-N crate a distance of 5m upward along africtionless slope that makes an angle of 30 deg. with thehorizontal. The force he exerts is parallel to the slope. If thespeed of the crate is constant, then the work done by the manis A)-200J B)61J C)140J D)200J E)260J

Explanation / Answer

Then the distance traveled is 5 m.
The work done by the man is going to be positive since the boxis moving in the direction he is moving so:
Work = F*d = 40*5 = 200J

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