College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 10 - Conceptual Questions - Page 396: 16


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Work Step by Step

At 45 mi/h , the vibration or frequency of the car must be matching the natural frequency of the system which results in highest amplitude. That is why the car must be experiencing a larger vibration which is uncomfortable for the passengers . At speeds higher or lower than 45 mi/h , the amplitude is much smaller than the maximum amplitude, hence lesser jump and lesser discomfort for passengers.
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