How is the mechanical advantage related to the velocity ratio for (i) an ideal machine (ii) a practical machine?

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter10: Work, Energy And Machines
Section: Chapter Questions
Problem 87A
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How is the mechanical advantage related to the velocity ratio for (i) an ideal machine (ii) a practical machine?

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