Classical Mechanics

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Work Done by an Escalator


A man ($m = 75\:kg$) is riding an escalator from the first floor to the second floor. The escalator is at a $35^\circ$ angle relative to the floor and lifts the man a total vertical distance of $4.8\:m$, traveling at a constant velocity. Assume effects of air resistance are negligible.

What is the work (in Joules) done by the escalator on the man?