. A centrifuge turning at 20000 rpm is suddenly turned off. Before it comes to a stop, the centrifuge spins for 1500 revolutions. Calculate the angular acceleration of the centrifuge assuming it to be constant.

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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.