Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
1st Edition
ISBN: 9780078945830
Author: Charles William McLaughlin, Marilyn Thompson, Dinah Zike
Publisher: Glencoe Mcgraw-Hill
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Chapter 4, Problem 50R
To determine

To explain: Changes in the mechanical energy of a book when it is pushed across a table at constant speed.

Expert Solution & Answer
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Explanation of Solution

Introduction:

Thesum totalof kinetic energy and potential energy is called mechanical energy.

When the book is at rest, the book possesses potential energy. As the book comes into motion due to the push, potential energy is converted to kinetic energy. The decrease in potential energy is overcome by the increase in kinetic energy. The sum total of the potential and kinetic energy (mechanical energy) remains constant at any point.

Conclusion:

The mechanical energy of a book remains constant when it is pushed across a table at a constant speed.

Chapter 4 Solutions

Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)

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Kinetic Energy and Potential Energy; Author: Professor Dave explains;https://www.youtube.com/watch?v=g7u6pIfUVy4;License: Standard YouTube License, CC-BY