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Particle Angular Velocity Problem

  1. Sep 12, 2014 #1
    1. The problem statement, all variables and given/known data

    I am given this graph and asked to find:
    a. the particle's angular velocity at t=1s
    b. angular velocity at t=4s
    c. angular velocity at t=7s

    2. Relevant equations

    ω = θ/t

    3. The attempt at a solution

    I got 0 for a, which is the correct answer. However, I cannot seem to figure out b or c. For c, I got 2π/7 and it is incorrect. I've also tried 2π*radians/T and that doesn't work either. I'm not really sure what to do.
     
  2. jcsd
  3. Sep 12, 2014 #2
    are you sure ω = θ/t is the right equation?

    how do you find velocity on a graph of position vs time?
     
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