ABSTRACT
This chapter explains the interrelationship between motion, mass, inertia and forces according to the rules set out in Newton's laws. It defines the equations which can be used to apply Newton's laws to both linear and angular motion. The chapter introduces and defines impulse and momentum, in both linear and angular terms. It explains the principle of conservation of momentum. The chapter presents a method of analysis by which problems relating to Newton's Laws may be solved. The example of the spacecraft illustrates that the application of an external force will increase the velocity of the mass, imparting momentum by virtue of the inertia possessed by the mass. The analysis of a rim-type flywheel shows how the moment of inertia may be calculated. The concepts of impulse and momentum are closely related and are really the application of Newton's first law.
