At time t=0,the current to the DC motor is reversed resulting in angular displacement of the motor shaft given by (angle =(198rad/s))t-(24rad/s^2)t^2-(2rad/s^3/)t^3 a) at what time is the angular velocity of the motor shaft zero?
1 Answer
Apr 12, 2018
The time is
Explanation:
The angle is
The angular velocity is
Therefore,
when
Therefore,
Discard the negative value
The time is