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March 28, 2017

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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?

  • physics - ,

    1. W(grav) = -mgh
    2. W(es) = mgh

  • physics - ,

    a)80
    b) 97

  • physics - ,

    previous answers were wrong

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