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Time for a wave to propagate

  1. Aug 22, 2008 #1
    1. The problem statement, all variables and given/known data
    Show that the time it takes a wave to propagate up the cable (cable which hangs vertically under its own weight) is t = 2[tex]\sqrt{L/g}[/tex], where L is the cable length.

    2. Relevant equations
    i think.... v=[tex]\sqrt{F/\mu}[/tex]

    3. The attempt at a solution
    i've been staring at this problem for about 2 hours now. can anyone just help me how to get started on this one??
  2. jcsd
  3. Aug 22, 2008 #2


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    Yes. And F is the tension in the cable.
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