At t = 0 a grinding wheel has an angular velocity of 24.0 rad/s.
It has a constant angular acceleration of 30.0 rad/s2 until a circuit breaker
trips at t = 2.00 s. From then on, it turns through 432 rad as it coasts to
a stop at constant angular acceleration. (a) Through what total angle did
the wheel turn between t = 0 and the time it stopped? (b) At what time
did it stop? (c) What was its acceleration as it slowed down?
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