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Homework Help: Youngs modulus

  1. Mar 8, 2009 #1
    can any one help me with this question.....i am stuck


    data for steal wire 1.72 m long and 0.4 mm diameter

    load 10 20 30 40 50 60
    extension 0.7 1.5 2.1 2.9 3.6 4.3

    find youngs modulus???


    i have this formula E=F/A*L/AL but dont know how to use it....
     
  2. jcsd
  3. Mar 8, 2009 #2

    LowlyPion

    User Avatar
    Homework Helper

    Welcome to PF.

    It would help if you had the right equation:
    http://hyperphysics.phy-astr.gsu.edu/hbase/permot3.html#c2

    A is your area - they give you the diameter.

    F is your load - they give you a bunch of loads.

    L is your length - they give you the length

    ΔL is the change in length - they give you Δ's for various loads.
     
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