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Answer confirmation-not an assignment question.

  1. Oct 13, 2012 #1
    Hi! I have attached the picture. Can someone please tell me what equation of motion will be?
    My guess is that it will be

    [itex]\ddot{x}[/itex] = -k/x -kx/2
     

    Attached Files:

  2. jcsd
  3. Oct 13, 2012 #2

    mfb

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    What is x? What is "O"? What is fixed, what is not?
    Those things labelled "k" are springs?
    I don't think your answer is correct.
     
  4. Oct 13, 2012 #3
    Note that the springs are pulling in opposite directions. Check your signs.
     
  5. Oct 13, 2012 #4

    mfb

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    I think the signs are right, but it depends on the (unknown) original problem. However, an x in the denominator looks odd and I would expect to see a mass in the equation.
     
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