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Homework Help: Young's modulus problem

  1. Mar 11, 2007 #1
    1. The problem statement, all variables and given/known data
    The asteriod Ceres has a mass of 1.11x10^21 kg and a diamter 772km. Ceres orbits the sun at an average distance of 414 million kilometers.
    Estimate the change in length of a 2m length of thin copper wire caused by hanging a 1.5kg mass on the wire on the asteriod Ceres.

    2. Relevant equations

    g = \frac{{GM}}{{r^2 }} \\
    a = \frac{{v^2 }}{r} \\

    3. The attempt at a solution

    Could somebody please give me some direction on how to approach these situation. Many thanks in return,

  2. jcsd
  3. Mar 11, 2007 #2

    Doc Al

    User Avatar

    Staff: Mentor

    If you hung the mass from the wire on Earth, how much would the wire stretch? (Consider Young's modulus.) What's different on Ceres?
  4. Mar 12, 2007 #3
    Young's modulus......never heard of it, thanks ill look into it
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