A winch is driven by a 4.0 kW electric motor and is lifting a load of 400 kg to a height of 5.0 m.If the lifting operation takes 8.6 s, calculate the overall efficiency of the winch and the motorsystem. (State the answer as a %)

Formula of efficiency is as follows: η(%)=PoPin×100…

Answered: A winch is driven by a 4.0 kW electric…

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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A winch is driven by a 4.0 kW electric motor and is lifting a load of 400 kg to a height of 5.0 m. If the lifting operation takes 8.6 s, calculate the overall efficiency of the winch and the motor system. (State the answer as a %)