How much work does the up escalator do on you when you ride it from the lower le

Question

How much work does the up escalator do on you when you ride it from the lower level to the upper level? Enter your answer as an expression using the variables found in the problem Constants An escalator carries you from one level to the next in an airport terminal. The upper level is at height h above the lower level, and the length of the escalator is L Assume that your mass is m and the gravitiy constant is 9. You may want to review (Pages 289-292) Submit Request Answer Part B How much work does the down escalator do on you when you ride it from the upper level to the lower level? Enter your answer as an expression using the variables found in the problem.

Explanation / Answer

A)

Theta = cos-1(h/L)

Work done, W = m * g * L * (h/L) = m * g * h

B) Work done, W = - m * g * h

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