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Solids, Young's Modulus

  1. Mar 19, 2007 #1
    1. The problem statement, all variables and given/known data
    Hang a 0.25 kg rock from the end of a spring. If the spring stretches 0.25 m, what is the spring constant?

    2. Relevant equations
    i'd assume
    F/A=Y(Change in L/Lo)

    3. The attempt at a solution
    I can do it if there was Area, but there isn't. there's probably another equation for this thta i missed in class.
    Thanks to anyone tat help:smile:
  2. jcsd
  3. Mar 19, 2007 #2
    Looks more like a Hooke's law problem to me??
  4. Mar 19, 2007 #3
    like as in f=-kx. what orce is present besides the springs?
  5. Mar 19, 2007 #4
    yea it is hooks law, thanks again
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