An electric motor rotating a workshop grinding wheelat 1.00 x 10^2 rev/min is switched off. Assume the wheelhas a constant negative angular acceleration of magni-tude 2.00 rad/s^2. (a) How long does it take the grindingwheel to stop? Answer 5.24 s (b) Through how many radians has thewheel turned during the time interval found in part (a)? Answer 27.4 rad
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.
An electric motor rotating a workshop grinding wheelat 1.00 x 10^2 rev/min is switched off. Assume the wheelhas a constant negative
(a) How long does it take the grindingwheel to stop?
Answer 5.24 s
(b) Through how many radians has thewheel turned during the time interval found in part (a)?
Answer 27.4 rad
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