The textbook contains basic themes for the study of the discipline "Engineering mechanics". It is developed in accordance with the syllabus of educational discipline. It is recommended for training bachelors in the field of study 6.050304 -"Petroleum engineering". CONTENTS PREFACE 6 I INTRODUCTION TO STATICS 7 1 Mechanics 7 2 Fundamental Concepts 8 II STATICS 9 3 Force 9 4 Free-Body Diagrams 16 5 Fundamental Axioms of Statics 24 III CONCURRENT FORCE SYSTEM 27 6 Concurrent Force System 27 7 Condition for Equilibrium of a Body Under the 31 Acting of Concurrent Force System 8 General Procedure for Analysis of Statics Problems 34 IV MOMENT OF A FORCE 35 9 Moment of a Force - Scalar Formulation 35 10 Moment of a Force - Vector Formulation 37 11 Moment of a Force - Cartesian Vector Formulation 39 12 Moment of a Force About a Specified Axis 41 13 Varignon's Theorem 43 V ARBITRARY FORCE SYSTEMS 45 14 Resultant Moment and Resultant Force of the Force -Systems 45 15 Moment of a Couple 46 16 Equivalent Couples 48 17 Resultant Couple Moment 49 18 Force-Couple Systems 50 19 Simplification of a Force and Couple System 51 20 Further Simplification of a Force and Couple System 53 21 Conditions for Rigid-Body Equilibrium 56 22 Equations of Equilibrium 58 23 Constraints and Statical Determinacy 61 24 Equilibrium of the System of Bodies 65 VI SOME SPECIAL TOPICS OF STATICS 66 25 Theory of Dry Friction 66 26 Problems Involving Dry Friction 72 27 Wedges 76 28 Frietional Forces on Screws 78 29 Frietional Forces on Flat Belts 80 30 Rolling Resistance 83 VIT TRUSSES 85 31 Simple Trusses 85 32 Method of Joints 88 33 Zero-Force Members 89 34 Method of Sections 91 VIII WEIGHT AND THE CENTER OF GRAVITY 93 35 Center of Gravity, Center of Mass, and the Centroid of a Body 94 36 Centroid of Some Simple Geometrical Figures 98 37 Ways of Determination Location the Center of Gravity 101 IX KINEMATICS 103 38 Kinematics of Particle 103 39 Motion of Particle: Vectors 104 40 Motion of Particle: Cartesian Coordinates 107 41 Motion of Particle: Cylindrical Components 109 42 Natural Coordinate System (t, n, b axis) 114 43 Motion of Particle: Natural Coordinate System 115 44 Classification of Motion of a Particle by its Acceleration 116 X KINEMATICS OF RIGID BODY 120 45 Kinematics of Rigid Body: Basic Concepts 120 46 Planar Rigid Body Motion 122 47 Translation Motion 123 48 Rotation Rigid Body About Fixed Axis 125 49 Motion of Body's Point P 127 XI RELATIVE-MOTION ANALYSIS OF PARTICLE 130 50 Basic Definitions of Relative Motion of Particle 130 51 Relative-Motion Analysis of Particle: Velocity 133 52 Relative-Motion Analysis of Particle: Acceleration 135 53 Coriolis Acceleration 136 XII RELATIVE-MOTION ANALYSIS OF RIGID BODY 137 54 General Plane Motion of A Rigid Body 137 55 Relative-Motion Analysis of Rigid Body: Velocity 139 56 Instantaneous Center of Zero Velocity 142 57 Relative-Motion Analysis of Rigid Body: Acceleration 146 58 Rotation About a Fixed Point 149 XIII APPENDICES 154 INDEX 156 LITERATURE 159