Starting from rest, a 12-cm-diameter compact disk takes 3.0 s to reach its operating angular velocity of
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Starting from rest, a 12-cm-diameter compact disk takes 3.0 s to reach its operating angular velocity of 2000 rpm. Assume that the angular acceleration is constant. The disk’s moment of inertia is 2.5 × 10-5 kg m2.
a. How much net torque is applied to the disk?
b. How many revolutions does it make before reaching full speed?
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Related Book For 
Physics for Scientists and Engineers A Strategic Approach with Modern Physics
ISBN: 978-0133942651
4th edition
Authors: Randall D. Knight
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