Angular speed, acceleration and displacement
Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.
Angular Position
Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.
Explain when that happens the motion of the rigid body is combined translation and rotation?
When a car moves, its wheels also move with it as well as the wheels rotate about their own axes. Thus, the wheels of the car have combined rotational and translational motion.
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