A centrifuge in a medical laboratory rotates at an angular
speed of 3 600 rev/min. When switched off, it rotates
through 50.0 revolutions before coming to rest. Find the
constant angular acceleration of the centrifuge.

Question

A centrifuge in a medical laboratory rotates at an angular
speed of 3 600 rev/min. When switched off, it rotates
through 50.0 revolutions before coming to rest. Find the
constant angular acceleration of the centrifuge.

anonymous · Answer

Angular acceleration is angular velocity divided by time.  Note however that 3600 rev/min is  not an angular velocity.  Angular velocity is degrees or radians per unit time (degrees/sec, radians/sec, and etc.).