1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Calculating the angle using angular acceleration

  1. Apr 2, 2014 #1

    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.

  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).

  6. Apr 4, 2014 #5
    Perfect. Thanks for your help.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook