A skier of mass 70 kg is pulled up a slope by a motor driven cable. A.) How much work is required to pull him 60m up a 30 slope (assumed frictionless) at a constant speed of 2 m/s? B.) What power (expressed in hp) must a motor have to perform this task?

A skier of mass 70 kg is pulled up a slope by a motor driven cable. A.) How much work is required to pull him 60m up a 30 slope (assumed frictionless) at a constant speed of 2 m/s? B.) What power (expressed in hp) must a motor have to perform this task?

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 40A

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Question

A skier of mass 70 kg is pulled up a slope by a motor driven cable. A.) How much work is required to pull
him 60m up a 30 slope (assumed frictionless) at a constant speed of 2 m/s? B.) What power (expressed in
hp) must a motor have to perform this task?

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