Question: At time /= 0, the current to a de electric motor is reversed, resulting in an angular displacement of the motor shaft according to

At time /= 0, the current to a de electric motor is

At time /= 0, the current to a de electric motor is reversed, resulting in an angular displacement of the motor shaft according to 0= 121-241, where 0 is in rad and 7 is in s. The angular speed of the motor shaft is zero at time / =

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