ABSTRACT
This chapter describes the angular motion, deriving and using the equations for such motion and relating linear motion of points on the circumference of rotating objects with their angular motion. It introduces basic concepts of torque. The angular displacement is the angle swept out by the rotation and is measured in radians. The chapter discusses constant angular velocity, average angular acceleration and constant angular acceleration. The constant or uniform angular velocity occurs when equal angular displacements occur in equal intervals of time, however small a time interval is considered. The average angular acceleration over some time interval is the change in angular velocity during that time divided by the time. The constant or uniform angular acceleration occurs when the angular velocity changes by equal amounts in equal intervals of time.
