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Two objects on different concentric circular traks (relative period)

  1. Oct 20, 2012 #1
    Given two particles A and B realizing circular motion respectively on circles with same center o and of radii RA and RB where RA<RB. There angular velocities wA and wB are constant and initially the two objects form an angle θ.
    How long should the object A waits before he crosses object B?

    Thanks
     
  2. jcsd
  3. Oct 20, 2012 #2

    tiny-tim

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    hi ninjaboy! welcome to pf! :wink:

    show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
     
  4. Oct 20, 2012 #3
    Thanks for replying, I've done this;

    va=Ra*wa
    va=Rb*wb

    da=va*ta
    db=vb*tb

    I need to compute the period for the two objects to meet knowing that wa≠wb and that initially they form angle θ.
     
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