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Homework Help: Constant angular acceleration problem

  1. Feb 16, 2013 #1
    Ok so here is the problem

    A centrifuge operates at 3600 rpm. When switched on it rotates 72 times before reaching operational angular speed. Find the constant angular acceleration while its speeding up.

    Ok so I already know I needed to convert rpm to rad/sec which I did. I'm stuck here because the formula I have for ang acc is (Change in W)/ time. But I don't know time or ang acc. Thanks for the help btw
  2. jcsd
  3. Feb 16, 2013 #2


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    You don't know the time, but you do know the "distance". The solution is analogous to linear motion in 1 dimension.
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