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Young's Modulus Question

  1. Apr 27, 2009 #1
    1. The problem statement, all variables and given/known data

    Assume that Young's Modulus for bone is 1.50 X 10^10 N/m2 and that the bone will fracture if more than 1.50 X 10^8 N/m2 is exerted.

    (a) What is the maximum force that can be exerted on the femur bone in the leg if it has a minimum effective diameter of 2.60 cm?

    (b) If a force of this magnitude is applied compressively, by how much does the 24.0 cm long bone shorten?

    2. Relevant equations

    Y = tensile stress / tensile strain

    tensile stress = F/A
    tensile strain = delta L / Initial L

    3. The attempt at a solution

    I understand the concept, but i cant figure out where to plug the numbers into. Since I dont have any lengths for part a, I guess you wouldnt use the entire young's equation, but what exactly would I use?

    Any help would be great! Thanks!
     
  2. jcsd
  3. Apr 27, 2009 #2
    never mind, I figured it out
     
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