A centrifuge rotor rotating at 10,000 rpm about an axis through its center of mass is shut off and eventually brought to rest by a frictional torque of magnitude 1.20 N.m. If the rotor has a mass of 4.80 kg and if it can be approximated as a uniform disk of radius 7.10 cm, then (a) what is the moment of inertia of the rotor about an axis through its center of mass? (b) What is the magnitude of the angular acceleration of the rotor? (c) Through how many revolutions will the rotor turn before coming to rest, and how long will it take? Include a diagram of the situation.
A centrifuge rotor rotating at 10,000 rpm about an axis through its center of mass is shut off and eventually brought to rest by a frictional torque of magnitude 1.20 N.m. If the rotor has a mass of 4.80 kg and if it can be approximated as a uniform disk of radius 7.10 cm, then (a) what is the moment of inertia of the rotor about an axis through its center of mass? (b) What is the magnitude of the angular acceleration of the rotor? (c) Through how many revolutions will the rotor turn before coming to rest, and how long will it take? Include a diagram of the situation.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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Transcribed Image Text:A centrifuge rotor rotating at 10,000 rpm about an axis through its center of mass is shut off
and eventually brought to rest by a frictional torque of magnitude 1.20 N.m. If the rotor has a
mass of 4.80 kg and if it can be approximated as a uniform disk of radius 7.10 cm, then
(a) what is the moment of inertia of the rotor about an axis through its center of mass?
(b) What is the magnitude of the angular acceleration of the rotor? (c) Through how many
revolutions will the rotor turn before coming to rest, and how long will it take? Include a
diagram of the situation.
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