CONTENTS 



PAGE 

 CHAPTER I. REST AND MOTION 1 



Introduction. Motion of a point. Velocity. Acceleration. Vec- 

 tors. 



CHAPTER II. FORCE AND THE LAWS OF MOTION 26 



Newton's laws. Frame of reference. Laws applicable only to the 

 motion of a particle. 



CHAPTER III. FORCES ACTING ON A SINGLE PARTICLE .... 37 



Composition and resolution of forces. Particle in equilibrium. 

 Types of forces, weight of a particle, tension of a string, reac- 

 tion between two bodies. Friction. 



CHAPTER IV. STATICS OF SYSTEMS OF PARTICLES 59 



Moments. System of particles in equilibrium. Forces in one plane. 

 Strings, the suspension bridge, the catenary. 



CHAPTER V. STATICS OF RIGID BODIES 90 



Rigidity. Conditions of equilibrium for a rigid body. Transmissi- 

 bility of force. Composition of forces acting in a plane. Parallel 

 forces. Couples. Forces in space. 



CHAPTER VI. CENTER OF GRAVITY 117 



Center of gravity of a lamina. Center of gravity obtained by inte- 

 gration. Center of gravity of areas and volumes. 



CHAPTER VII. WORK 145 



Measurement and units. Work done against a variable force. 

 Work done in stretching an elastic string. Work represented by an 

 area. The principle of virtual work. Potential energy. Kinetic 

 energy. Conservation of energy. Stable and unstable equilibrium. 



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