A turntable must spin at 330 rpm 346 rads to play an, Ask an Expert

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A turntable must spin at 33.0 rpm (3.46 rad/s) to play an old-fashioned vinyl record. How much torque must the motor deliver if the turntable is to reach its final angular speed in 2.5 revolutions, starting from rest? The turntable is a uniform disk of diameter 30.5 cm and mass 0.25 kg.

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