A cyclist hits the brakes and decelerates. Her wheels were spinning at 200 rev/min initially and 10 rev/min after 3 seconds of deceleration. Compute the average angular acceleration of the wheels (in rads/sec2) during this 3 seconds period. How long does it take her (altogether) to come to a complete stop if she maintains the same acceleration?
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.
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A cyclist hits the brakes and decelerates. Her wheels were spinning at 200 rev/min initially and 10 rev/min after 3 seconds of deceleration.
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Compute the average
angular acceleration of the wheels (in rads/sec2) during this 3 seconds period. -
How long does it take her (altogether) to come to a complete stop if she maintains the same acceleration?
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