An elevator has an electrical power rating of 3.2 x 104 W. If the elevator takes 42 s to move up 3 floors (12 m total), what is its efficiency? Assume the mass of the elevator and its passengers is 1800 kg.
An elevator has an electrical power rating of 3.2 x 104 W. If the elevator takes 42 s to move up 3 floors (12 m total), what is its efficiency? Assume the mass of the elevator and its passengers is 1800 kg.
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 68A
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An elevator has an electrical power rating of 3.2 x 104 W. If the elevator takes 42 s to move up 3 floors (12 m total), what is its efficiency? Assume the mass of the elevator and its passengers is 1800 kg.
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