The angular velocity of a process control motor is v = 120
Chapter 4, Problem 4.115(choose chapter or problem)
The angular velocity of a process control motor is v = 120 - 1 2 t 2 2rad/s, where t is in seconds. a. At what time does the motor reverse direction? b. Through what angle does the motor turn between t = 0 s and the instant at which it reverses direction?
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