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Physics question about waves?

  1. Jan 8, 2012 #1
    1. The problem statement, all variables and given/known data
    The wave speed in an aluminum wire with a radius of .001m is 120 m/s. What is the tension in the wire? The density of the aluminium is 2.7 X103 kg/m3


    2. Relevant equations

    v=√Fu
    v1/v2=D2/D1

    3. The attempt at a solution

    How do you find the mass using density and radius??...
     
  2. jcsd
  3. Jan 8, 2012 #2

    ehild

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    Homework Helper
    Gold Member

    The mass of what?

    ehild
     
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