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Calculating the angle using angular acceleration

  1. Apr 2, 2014 #1
    Hi

    I have calculated angular acceleration which changes with time. I also have a moment(torque) which also changes with time and a fixed moment of inertia. Is there an equation or a way for me to work out the change in angle with respect to time using this information? If not, what other information do I need?
     
  2. jcsd
  3. Apr 3, 2014 #2
    If you know the angular acceleration as a function of time and you know the initial angular velocity at time zero, you can integrate with respect to time to get the angular velocity as a function of time. Then you can integrate again to get the change in angle with respect to time.

    Chet
     
  4. Apr 4, 2014 #3
    The initial angular velocity will always be zero because the object starts moving from equilibrium.
    So integrating angular acceleration gives me angular velocity. I thought integrating angular velocity will give me displacement/position or am I wrong thinking that?
     
  5. Apr 4, 2014 #4
    Integrating angular velocity will give you angular displacement (aka change in angle).

    Chet
     
  6. Apr 4, 2014 #5
    Perfect. Thanks for your help.
     
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