A skier of mass 61 kg is pulled up a slope by a motor-driven cable.(a) How much work is required to pull him 55 m up a 30° slope (assumed frictionless) at a constant speed of 2.1 m/s?kJ(b) What power (expressed in hp) must a motor have to perform this task?hp

Given:Mass = 61 kgDistance to be covered = 55 mAngle = 30oSpeed = 2.1 m/s

Answered: A skier of mass 61 kg is pulled up a…

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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A skier of mass 61 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him 55 m up a 30° slope (assumed frictionless) at a constant speed of 2.1 m/s? kJ (b) What power (expressed in hp) must a motor have to perform this task? hp