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Homework Help: Tension in wire

  1. Dec 15, 2009 #1
    1. The problem statement, all variables and given/known data

    The wires on a violin have a cross section of 5.1*10^-7m^2. The wires are put under tension by turning the wooden pegs. The Young Modulus of Steel is 2.0*10^11 Pa.
    Calculate the tension required to produce an extension of 4*10^-4m.


    2. Relevant equations

    Thats where i'm stuck

    3. The attempt at a solution
     
  2. jcsd
  3. Dec 15, 2009 #2
    Do you know a formula with stress and strain in it?
    Do you know the definition of stress and strain?
    These are what you need to use.
     
    Last edited: Dec 15, 2009
  4. Dec 15, 2009 #3
    oh, of course. E=(F*L)/(e*A)
     
  5. Dec 15, 2009 #4
    no, wait, wrong one, lol
     
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