ANSWER: ____Rotational Dynamics - Wheel Stops at 2.20s w/489 Rad Total

[emeraldempres]

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
stopped?
ANSWER: ______489 Rad


(ii) At what time did the wheel stop

i have no clue what to do here

 

[Kurdt]

The following page may help.

http://hyperphysics.phy-astr.gsu.edu/HBASE/rotq.html#drot