Homework Help: Physics

Posted by John on Monday, March 24, 2008 at 1:50pm.

A certain CD has a playing time of 76 minutes. When the music starts, the CD is rotating at an angular speed of 4.8 102 revolutions per minute (rpm). At the end of the music, the CD is rotating at 2.1 102 rpm. Find the magnitude of the average angular acceleration of the CD. Express your answer in rad/s2.

Physics - bobpursley, Monday, March 24, 2008 at 2:43pm
<angular acceleration>=(final w -initial w)/time

change w to rad/sec before starting, and time in seconds.

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