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    average angular acceleration of the CD

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    A certain CD has a playing time of 78 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 * 10^2 revolutions per minute (rpm). At the end of the music, the CD is rotating at 2.1 * 10^2 rpm. Find the magnitude of the average angular acceleration of the CD. Express your answer in rad/s2.

    © BrainMass Inc. brainmass.com May 20, 2020, 3:37 pm ad1c9bdddf
    https://brainmass.com/physics/circular-motion/average-angular-acceleration-cd-135202

    Solution Preview

    The average angular acceleration a = (w_2 - w_1) /t

    The final angular velocity w_2 = 2.1 * 100 rpm
    The initial angular velocity w_1 = ...

    Solution Summary

    The solution shows the detailed steps of calculations of the average angular acceleration of the CD.

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