Applied Mechanics for Engineering Technology

by Walker, Keith M.

• ISBN13: 9780130933751
• ISBN10: 0130933759
• Edition: 7th
• Format: Hardcover
• Copyright: 2003-04-17
• Publisher: Prentice Hall

Summary

This introduction to applied mechanics combines a straightforward, readable foundation in underlying physics principles with a consistent method of problem solving that strips a problem to essentials and solves it in a logical, organized manner. It presents the physics principles in small elementary steps; keeps the mathematics at a reasonable level (algebra, trigonometry and geometry are used); provides an abundance of worked examples; and features problems that are as practical as possiblewithoutbecoming too involved with many extraneous details.The volume addresses forces, vectors, and resultants, moments and couples, equilibrium, structures and members, three-dimensional equilibrium, friction, centroids and center of gravity, moment of inertia, kinematics, kinetics, work, energy, and power and impulse and momentum.For those interested in an introduction to applied mechanics.

Table of Contents

PART ONE: STATICS
Introduction	1	(34)
What and Why of Applied Mechanics	1	(1)
Units and Basic Terms	2	(6)
Method of Problem Solution and Workmanship	8	(3)
Numerical Accuracy and Significant Figures	11	(1)
Mathematics Required	12	(1)
Algebraic Equation---One Unknown	12	(2)
Simultaneous Equations---Two Unknowns	14	(2)
Quadratic Equations	16	(1)
Trigonometry: Right-Angle Triangles	17	(2)
Sine and Cosine Laws: Non-Right-Angle Triangles	19	(3)
Geometry	22	(13)
Hints for Problem Solving	23	(1)
Problems	24	(7)
Review Problems	31	(4)
Forces, Vectors, and Resultants	35	(26)
Vectors	35	(2)
Force Types, Characteristics, and Units	37	(1)
Resultants	38	(1)
Vector Addition: Graphical (Tip to Tail)	39	(2)
Vector Addition: Analytical	41	(2)
Components	43	(3)
Vector Addition: Components	46	(15)
Hints for Problem Solving	48	(1)
Problems	48	(9)
Review Problems	57	(4)
Moments and Couples	61	(20)
Moment of a Force	61	(3)
Couples	64	(17)
Hints for Problem Solving	70	(1)
Problems	70	(8)
Review Problems	78	(3)
Equilibrium	81	(60)
Free-Body Diagrams	81	(2)
Three Equations of Equilibrium	83	(1)
Free-Body Diagram Conventions	84	(8)
Two-Force Members	92	(3)
Pulleys	95	(3)
Coplanar Concurrent Force Systems	98	(4)
Coplanar Parallel Force Systems	102	(6)
Coplanar Noncurrent Force Systems	108	(33)
Hints for Problem Solving	112	(1)
Problems	113	(22)
Review Problems	135	(6)
Structures and Members	141	(56)
Method of Joints	141	(10)
Method of Sections	151	(4)
Method of Members	155	(42)
Hints for Problem Solving	164	(1)
Problems	165	(26)
Review Problems	191	(6)
Three-Dimensional Equilibrium	197	(38)
Resultant of Parallel Forces	197	(3)
Equilibrium of Parallel Forces	200	(2)
Components and Resultants of Forces in Space	202	(3)
Equilibrium in Three Dimensions	205	(1)
Nonconcurrent, Three-Dimensional Systems	206	(5)
Concurrent, Three-Dimensional Systems	211	(24)
Hints for Problem Solving	215	(1)
Problems	216	(15)
Review Problems	231	(4)
Friction	235	(34)
Introduction	235	(1)
Friction Laws for Dry Surfaces	235	(1)
Coefficients of Friction	236	(1)
Angle of Friction	237	(9)
Belt Friction	246	(23)
Hints for Problem Solving	251	(1)
Problems	252	(12)
Review Problems	264	(5)
Centroids and Center of Gravity	269	(18)
Introduction	269	(1)
Centroids of Simple Areas	270	(1)
Centroids of Composite Areas	271	(3)
Centroids of Lines	274	(13)
Hints for Problem Solving	277	(1)
Problems	277	(8)
Review Problems	285	(2)
Moment of Inertia	287	(30)
Moment of Inertia of an Area	287	(1)
Parallel Axis Theorem	288	(4)
Moment of Inertia of Composite Areas	292	(3)
Radius of Gyration	295	(2)
Mass Moment of Inertia	297	(4)
Mass Moment of Inertia of Composite Bodies	301	(3)
Radius of Gyration of Bodies	304	(13)
Hints for Problem Solving	305	(1)
Problems	305	(9)
Review Problems	314	(3)
PART TWO: DYNAMICS
Kinematics: Rectilinear Motion	317	(26)
Introduction	317	(1)
Displacement	318	(1)
Velocity	319	(1)
Acceleration	320	(2)
Rectilinear Motion with Uniform Acceleration	322	(6)
Projectiles	328	(15)
Hints for Problem Solving	333	(1)
Problems	334	(6)
Review Problems	340	(3)
Kinematics: Angular Motion	343	(24)
Introduction	343	(1)
Angular Displacement	344	(1)
Angular Velocity	345	(1)
Angular Acceleration	345	(1)
Angular Motion with Uniform Acceleration	346	(3)
Relationship between Rectilinear and Angular Motion	349	(4)
Normal and Tangential Acceleration	353	(14)
Hints for Problem Solving	356	(1)
Problems	357	(6)
Review Problems	363	(4)
Plane Motion	367	(48)
Relative Motion	367	(13)
The Rolling Wheel	380	(2)
Instantaneous Center of Rotation	382	(33)
Hints for Problem Solving	391	(1)
Problems	392	(17)
Review Problems	409	(6)
Kinetics	415	(36)
Introduction	415	(1)
Linear Inertia Force	416	(1)
Linear Inertia Force: Dynamic Equilibrium	417	(5)
Angular Inertia	422	(2)
Angular Dynamic Equilibrium	424	(3)
Plane Motion	427	(24)
Hints for Problem Solving	434	(1)
Problems	435	(13)
Review Problems	448	(3)
Work, Energy, and Power	451	(48)
Introduction	451	(1)
Work of a Constant Force	452	(1)
Work of a Variable Force	453	(3)
Potential and Kinetic Energy: Translational	456	(3)
Conservation of Energy: Translational	459	(3)
Kinetic Energy: Angular	462	(2)
Conservation of Energy: Angular	464	(4)
Conservation of Energy: Plane Motion	468	(5)
Power and Efficiency	473	(26)
Hints for Problem Solving	478	(1)
Problems	478	(17)
Review Problems	495	(4)
Impulse and Momentum	499	(20)
Linear Impulse and Momentum	499	(2)
Angular Impulse and Momentum	501	(3)
Conservation of Momentum	504	(15)
Hints for Problem Solving	511	(1)
Problems	511	(6)
Review Problems	517	(2)
Answers to Problems	519	(16)
Index	535

Excerpts

Applied mechanics is more than the teaching of physics principles. It is an important instrument in developing a method of stripping a problem to essentials and solving it in a logical, organized manner. This method of working can be applied to many other areas. This book, therefore, shows a consistent pattern of problem solving. The physics principles are presented in small elementary steps, the mathematics is kept at a reasonable level, and the problems are as practical as possible without becoming too involved with many extraneous details.To accommodate the transition years between the U.S. Customary system and the SI metric system, each chapter is a random mix of both systems but predominantly St metric. There are more than 175 worked examples and 960 graded problems, of which nearly two thirds are in the SI metric system.I would now like to address the student directly. You will no doubt discover problems that defy solution, no matter how well you understand all previous examples or problems. At the end of each chapter there is a list of hints for problem solving. It is not necessarily a summary of the chapter material but is rather similar to a serviceman's troubleshooting list. It is a list of the common areas where students have had difficulty or made errors in the past. Hopefully, by using this checklist to go back over your diagrams and calculations, you will find self-study and problem solving, not only easier but certainly less frustrating.I would also like to acknowledge the reviewers of this text: George Tebbetts--University of Arkansas at Little Rock and Alan D. Chamberlain--Point Park College. Keith M. Walker