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At time t=0 a grinding wheel has an angular velocity of 30.0 rad/s. It has a constant angular acceleration of 27.0 rad/s^2 until a circuit breaker...

At time t=0 a grinding wheel has an angular velocity of 30.0 rad/s. It has a constant angular acceleration of 27.0 rad/s^2 until a circuit breaker trips at time t = 1.90 s. From then on, the wheel turns through an angle of 440 rad as it coasts to a stop at constant angular deceleration.

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