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Homework Help: Ressonance frequency

  1. May 21, 2012 #1
    1. The problem statement, all variables and given/known data


    Two bodies with the same mass are connected trough a string. The tension on the string is T. Find the ressonance frequency of the system.

    2. Relevant equations

    3. The attempt at a solution

    F=m*a, 0=0 , doesn't help me much.

    At the ressonance frequency the wave will have 3 nodes. I know that those kind of waves have the following equation of movement:
    y=2*Asin(kx)cos(wt) , where k=2pi/wave length => k=2pi/2L.

    If i solve for x=L/2, I'll have 2Acos(wt), but I can't get rid of the t...

    I'm stuck here... don't know what else to do...
    Any hint or help will be very appreciated! Thanks.
  2. jcsd
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