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Homework Help: What is the Angular Velocity?

  1. Apr 21, 2009 #1
    1. The problem statement, all variables and given/known data
    A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 270 N applied to its edge causes the wheel to have an angular acceleration of 0.984 rad/s2.

    If the wheel starts from rest, what is its angular velocity after 4.30 s have elapsed, assuming the force is acting during that time?

    2. Relevant equations
    Moment of intertia is 90.457kg/m2
    mass of wheel is 1661.29kg

    3. The attempt at a solution

    I was able to find moment of inertia and mass of wheel above...not sure about angular velocity. I can't find the right equation what uses I.
  2. jcsd
  3. Apr 21, 2009 #2
    nm...it was just w=at
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