Asked by john

The angular speed of digital video discs (DVDs) varies with whether the inner or outer part of the disc is being read. (CDs function in the same way.) Over a 133 min playing time, the angular speed varies from 570 rpm to 1600 rpm. Assuming it to be constant, what is the angular acceleration (in rad/s2) of such a DVD?

Answers

Answered by bobpursley
angular acceleration= (wf-wi)/timeinseconds

change rpm to rad/sec

570rpm*2PIrad/rev*1min/60sec.
Answered by john
so 570rpm*2pirad = 3581.415625
i divide that with rev*1min/60 sec == 59.69 is that correct ??
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