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Question about stress and strain

  1. Jan 21, 2011 #1
    1. The problem statement, all variables and given/known data
    The elastic limit for a type of material is 1.6 x 10^8 Pa.Determine the minimum diameter if a wire which is made of this material so that it can support a load of 100N without the stress exceeding the elastic limit.


    2. Relevant equations
    elastic limit=stress
    =F/A
    1.6 x 10^8=100/ (pie)d^2
    I can't get the answer.please help

    3. The attempt at a solution
     
  2. jcsd
  3. Jan 21, 2011 #2

    Delphi51

    User Avatar
    Homework Helper

    In your S = F/A formula, replace A with the area of the circular wire.
    Solve for the radius or diameter.
    Put in the numbers for S and F.
     
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