Stars and Galaxies
Stars and Galaxies
9th Edition
ISBN: 9781305120785
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 5, Problem 21RQ
To determine

The gravitational force when a person is sitting next to a person who is having double mass moves to a distance twice that of the original distance.

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A traveler at an airport takes an escalator up one floor as in the figure below. 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. (Use any variable or symbol stated above along with the following as necessary: g.) energy = (b) Determine the work the escalator motor does on this person. (Use any variable or symbol stated above along with the following as necessary: g.) work =
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