## BY GEORGE HENRY MARTIN

CONTENTS
1. Fundamentals Concepts
2. Properties of Motion, Relative Motion, Methods of Motion Transmission
4. Instant Centers
5. Velocities by instant centres and by Components
6. Velocities in Mechanisms by Method of Relative Velocities
7. Accelerations in Mechanisms
8. Velocity and Acceleration Graphs and Graphical Differentiation
9. Mathematical Analysis
10. Cams
11. Rolling Contact
12. Gears
13. Gear Trains, Translation Screws, Mechanical Advantage
14. Synthesis of Mechanisms
15. Analog Computing Mechanisms
16. Static Forces in Machines
17. Inertia Forces in Machines
18. Flywheels
19. Balancing Rotating Masses
20. Balancing Reciprocating Masses
21. Gyroscopic Effects
22. Critical Whirling Speeds and Torsional Vibrations of Shafts

FUNDAMENTAL CONCEPTS

KINEMATICS : Kinematics of machines is a study of the relative motion of machine parts.  Displacement,  velocity,  and acceleration are considered

DYNAMICS : Dynamics of machines treats with the forces acting on the parts of a machine and the motions resulting from these forces.

MACHINE : A machine is a device for transforming or transferring energy.  It is sometimes defined as consisting of a number of fixed and moving bodies interposed be-  tween the source of power and the work to be done for the purpose of adapting one to the other.  The electric motor transforms electrical energy into mechanical​ energy while its counterpart the electric generator transforms mechanical energy into electrical energy.  In a gasoline engine each piston connecting rod and the crankshaft act as a machine for transferring energy.  The input mechanical energy is the product of the force on the piston and the distance it travels This energy is transferred to the crankshaft,  where it appears as output mechanical energy and is the product of the torque and the angle of shaft rotation.