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Trigonometry (MindTap Course List)

Trigonometry (MindTap Course List)

10th Edition

ISBN:9781337278461

Author:Ron Larson

Publisher:Ron Larson

Chapter3: Additional Topics In Trigonometry

Section3.4: Vectors And Dot Products

Problem 7ECP

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Question

A 60-kg woman holds a 9-kg package as she stands within an elevator which briefly accelerates
downward at a rate of a = 3.1 m/s². Determine the force N which the elevator floor exerts on her
feet and the lifting force L which she exerts on the package during the acceleration interval. If the
elevator support cables suddenly and completely fail, what values would N and L acquire? (N = 463
N, L = 60.4 N, N = L = 0)
9 kg
a
60 kg

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