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How long will it take a 4 hp motor to lift 400 kg piano to a sixth story window 1800 m above?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 38PE: (a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1hp=746W) to reach a...

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Question

How long will it take a 4 hp motor to lift 400 kg piano to a sixth story window 1800 m above?

a. 23.56 s

b. 23.65 s

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