A traveler at an airport takes an escalator up one floor, as in Figure P7.52. The moving staircase would itself carry him upward with vertical velocity component v between entry and exit points separated by height h. However, while the escalator is moving, the hurried traveler climbs the steps of the escalator at a rate of n steps/s. Assume that the height of each step is hs.
(a) Determine the amount of chemical energy converted into mechanical energy by the traveler€™s leg muscles during his escalator ride, given that his mass is m.
(b) Determine the work the escalator motor does on this person.

Transcribed Image Text:

Figure P7.52