The rotor of an electric motor has rotational inertia Im = 2.0 x 10 3 kg m2

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The rotor of an electric motor has rotational inertia Im = 2.0 x 10 3 kg ∙ m2 about its central axis. The motor is used to change the orientation of the space probe in which it is mounted. The motor axis is mounted along the central axis of the probe; the probe has rotational inertia If = 12 kg ∙ m2 about this axis. Calculate the number of revolutions of rotor required to turn the probe through 30° about its central axis.
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Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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