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Rotational dynamics

  1. Jun 20, 2008 #1
    At time t1 = 0 an electric grinding wheel has an angular velocity of 28.0 rad/s. It has a
    constant angular acceleration of 32.0 rad/s2. At time t2 = 2.20 s a circuit breaker trips, and the
    wheel then turns through another 350 rad as it coasts to a stop at constant angular acceleration.
    (i) Through what total angle did the wheel turn between t = 0 and the time it again
    ANSWER: ______489 Rad

    (ii) At what time did the wheel stop

    i have no clue what to do here
  2. jcsd
  3. Jun 20, 2008 #2


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