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Magnitude of Angular Acceleration

  1. Jun 14, 2009 #1
    1. The problem statement, all variables and given/known data
    A disk rotates with constant angular acceleration. The initial angular speed of the disk is 2π rad/s. After the disk rotates through 1π radians, the angular speed is 14π rad/s. What is the magnitude of the angular acceleration?

    2. Relevant equations

    3. The attempt at a solution
    I tried to use w=w0+at but that didn't work. What equation do I need to use?
  2. jcsd
  3. Jun 14, 2009 #2


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    Homework Helper

    Consider using another equation.

    One that doesn't involve time as a variable.
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