A turntable must spin at 33.3 rev/min (3.49 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 2.40 revolutions, starting from rest? The turntable is a uniform disk of diameter 30.5 cm and mass 0.270 kg. N•m

A turntable must spin at 33.3 rev/min (3.49 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 2.40 revolutions, starting from rest? The turntable is a uniform disk of diameter 30.5 cm and mass 0.270 kg. N•m

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 2OQ

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Question

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A turntable must spin at 33.3 rev/min (3.49 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 2.40 revolutions, starting from rest? The turntable is a uniform disk of diameter 30.5 cm
and mass 0.270 kg.
N·m

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