The 7th edition of this classic text continues to provide the same high quality material seen in previous editions. The text is extensively rewritten with updated prose for content clarity, superb new problems in new application areas, outstanding instruction on drawing free body diagrams, and new electronic supplements to assist readers.

CHAPTER 1 INTRODUCTION TO STATICS 3 1/1 Mechanics 3 1/2 Basic Concepts 4 1/3 Scalars and Vectors 4 1/4 Newton's Laws 7 1/5 Units 8 1/6 Law of Gravitation 12 1/7 Accuracy, Limits, and Approximations 13 1/8 Problem Solving in Statics 14 1/9 Chapter Review 18 CHAPTER 2 FORCE SYSTEMS 23 2/1 Introduction 23 2/2 Force 23 SECTION A TWO-DIMENSIONAL FORCE SYSTEMS 26 2/3 Rectangular Components 26 2/4 Moment 38 2/5 Couple 50 2/6 Resultants 58 SECTION B THREE-DIMENSIONAL FORCE SYSTEMS 66 2/7 Rectangular Components 66 2/8 Moment and Couple 74 2/9 Resultants 88 2/10 Chapter Review 99 CHAPTER 3 EQUILIBRIUM 109 3/1 Introduction 109 SECTION A EQUILIBRIUM IN TWO DIMENSIONS 110 3/2 System Isolation and the Free-Body Diagram 110 3/3 Equilibrium Conditions 121 SECTION B EQUILIBRIUM IN THREE DIMENSIONS 145 3/4 Equilibrium Conditions 145 3/5 Chapter Review 163 CHAPTER 4 STRUCTURES 173 4/1 Introduction 173 4/2 Plane Trusses 175 4/3 Method of Joints 176 4/4 Method of Sections 188 4/5 Space Trusses 197 4/6 Frames and Machines 204 4/7 Chapter Review 224 CHAPTER 5 DISTRIBUTED FORCES 233 5/1 Introduction 233 SECTION A CENTERS OF MASS AND CENTROIDS 235 5/2 Center of Mass 235 5/3 Centroids of Lines, Areas, and Volumes 238 5/4 Composite Bodies and Figures; Approximations 254 5/5 Theorems of Pappus 264 SECTION B SPECIAL TOPICS 272 5/6 Beams-External Effects 272 5/7 Beams-Internal Effects 279 5/8 Flexible Cables 291 5/9 Fluid Statics 306 5/10 Chapter Review 325 CHAPTER 6 FRICTION 335 6/1 Introduction 335 SECTION A FRICTIONAL PHENOMENA 336 6/2 Types of Friction 336 6/3 Dry Friction 337 SECTION B APPLICATIONS OF FRICTION IN MACHINES 357 6/4 Wedges 357 6/5 Screws 358 6/6 Journal Bearings 368 6/7 Thrust Bearings; Disk Friction 369 6/8 Flexible Belts 377 6/9 Rolling Resistance 378 6/10 Chapter Review 387 CHAPTER 7 VIRTUAL WORK 397 7/1 Introduction 397 7/2 Work 397 7/3 Equilibrium 401 7/4 Potential Energy and Stability 417 7/5 Chapter Review 433 APPENDICES APPENDIX A AREA MOMENTS OF INERTIA 441 A/1 Introduction 441 A/2 Definitions 442 A/3 Composite Areas 456 A/4 Products of Inertia and Rotation of Axes 464 APPENDIX B MASS MOMENTS OF INERTIA 477 APPENDIX C SELECTED TOPICS OF MATHEMATICS 479 C/1 Introduction 479 C/2 Plane Geometry 479 C/3 Solid Geometry 480 C/4 Algebra 480 C/5 Analytic Geometry 481 C/6 Trigonometry 481 C/7 Vector Operations 482 C/8 Series 485 C/9 Derivatives 485 C/10 Integrals 486 C/11 Newton's Method for Solving Intractable Equations 489 C/12 Selected Techniques for Numerical Integration 491 APPENDIX D USEFUL TABLES 495 Table D/1 Physical Properties 495 Table D/2 Solar System Constants 496 Table D/3 Properties of Plane Figures 497 Table D/4 Properties of Homogeneous Solids 499 INDEX 503 PROBLEM ANSWERS 507