ABSTRACT
This chapter discusses the work-energy equation to cover the motion of rigid bodies. It was found that a system of external forces acting on a body can always be reduced to a single force whose line of action passes through the center of mass of the body and a moment about the center of mass. Power is the rate at which work is done. When considering the equations of motion for a rigid body the problem can be separated into a resultant force acting through the center of mass and the resulting motion of the center of mass and a moment about the center of mass and the resulting angular motion of the body about its center of mass. The total kinetic energy possessed by a rigid body can be obtained by adding the kinetic energies due to translation of its center of mass and rotation about its center of mass.
