An escalator handles a steady load of 30 people per minute in elevating them from the first
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An escalator handles a steady load of 30 people per minute in elevating them from the first to the second floor through a vertical rise of 24 ft. The average person weighs 140 lb. If the motor which drives the unit delivers 4 hp, calculate the mechanical efficiency e of the system.
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Work done by escalator Mass of people x acceleration due to gravity x distance Mass of people 140 ...View the full answer
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Related Book For 
Engineering Mechanics Dynamics
ISBN: 9781118885840
8th Edition
Authors: James L. Meriam, L. G. Kraige, J. N. Bolton
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