A 870-kg man is riding an escalator in a shopping mall what, Physics

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A 870-kg man is riding an escalator in a shopping mall what

A 87.0-kg man is riding an escalator in a shopping mall.The escalator moves the man at a constant velocity from groundlevel to the floor above, a vertical height of 4.30 m. What is thework done on the man by

(a) the gravitational force and

(b) the escalator?

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Physics: A 870-kg man is riding an escalator in a shopping mall what

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