Wednesday
November 26, 2014

Homework Help: physics

Posted by james on Monday, July 8, 2013 at 1:14pm.

A 75.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 4.30 m. What is the work done on the man by (a) the gravitational force and (b) the escalator?

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