An electric motor can drive grinding wheel at two different speeds. when set to high the angular speed is 2000 rpm. the wheel turns at 1000 rpm when set to low. when the switch is changed from high to low, it takes the wheel 60 sec to slow down. a) ( 5 points) what is the initial angular speed of the high setting in rad/sec b) (5 points) what is the angular acceleration in rad/s2 of the wheel? c) (5 points) what is the angular speed in rad/s 40 seconds after the setting is changed? d) (5 points) how many revolutions did it make as it changes speed?