Example: Turntable Stopping

A turntable has an operating speed of 331/3 rev/min. When it is turned off it takes 2 minutes to coast to a complete stop. Find a, assuming that it coasts with a constant angular deceleration rate.

Initial Condition:

w0 = 33.333 rev/min

Final Condition:

wf = 0 rev/min

a = constant = ??

A turntable has an operating speed of 331/3 rev/min. When it is turned off it takes 2 minutes to coast to a complete stop. Find a, assuming that it coasts with a constant angular deceleration rate.