Conservation Laws

122 Pages·2000·1.434 MB·English

by  Crowell B.

Conservation
Laws
Benjamin Crowell
Book 2 in the Light and Matter series of introductory physics textbooks
www.lightandmatter.com

Conservation Laws
The Light and Matter series of
introductory physics textbooks:
1 Newtonian Physics
2 Conservation Laws
3 Vibrations and Waves
4 Electricity and Magnetism
5 Optics
6 The Modern Revolution in Physics
Conservation Laws
Benjamin Crowell
www.lightandmatter.com
Light and Matter
www.lightandmatter.com
© 1998 by Benjamin Crowell
All rights reserved.
Edition 2.0 — 2000
rev. 2000-08-13
To Uri Haber-Schaim, John Dodge, Robert Gardner, and Edward Shore.

Brief Contents
1 Conservation of Energy 13
2 Simplifying the Energy Zoo 27
3 Work: The Transfer of Mechanical Energy 39
4 Conservation of Momentum 61
5 Conservation of Angular Momentum 85
Solutions to Selected Problems 109
Glossary 111
Index 113
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Contents
1 Conservation
of Energy 13
1.1 The Search for a Perpetual Motion
Machine.................................................. 13
1.2 Energy ................................................. 14
1.3 A Numerical Scale of Energy............... 16
1.4 Kinetic Energy ..................................... 20
1.5 Power .................................................. 23
Summary...................................................... 25
3 Work: The Transfer of
Mechanical Energy 39
3.1 Work: The Transfer
of Mechanical Energy....................... 39
3.2 Work in Three Dimensions .................. 45
3.3 Varying Force ...................................... 47
3.4 (cid:242) Applications of Calculus .................... 49
3.5 Work and Potential Energy.................. 50
2 Simplifying the 3.6* When Does Work Equal
Force Times Distance? ................... 53
Energy Zoo 27
3.7* The Dot Product................................. 55
2.1 Heat is Kinetic Energy ......................... 28 Summary...................................................... 56
2.2 Potential Energy: Energy Homework Problems.................................... 57
of Distance or Closeness ................ 30
2.3 All Energy is Potential or Kinetic.......... 34
Summary...................................................... 36
Homework Problems.................................... 37
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