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What is the length of the spring

  1. Feb 18, 2009 #1
    1. The problem statement, all variables and given/known data

    Two identical weights of mass m hang motionless
    from massless strings attached to the two ends of a
    spring, as shown in the figure. The spring constant
    of the spring is k. What is the length of the spring,
    if its relaxed length is L0?

    2. Relevant equations
    f = -kx
    f = ma


    3. The attempt at a solution

    2t = -kx
     
  2. jcsd
  3. Feb 18, 2009 #2

    Tom Mattson

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    Re: spring

    Could you please either scan and attach the figure, or at least describe it?

    Where did the "t" come from?
     
  4. Feb 18, 2009 #3

    Delphi51

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    Homework Helper

    Re: spring

    No picture - can't tell what is going on from the written description.
     
  5. Feb 18, 2009 #4

    Tom Mattson

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    Re: spring

    OK, so where does t come from?
     
  6. Feb 18, 2009 #5
    Re: spring

    The picture sort of looks like this ;

    ______springIsHereOntheTable_______
    |.....ignore these dots......................|
    |..................................................|
    |..................................................|<-those lines at the end are a string.
    m1...............................................m2

    so the spring is on a table and attached to the left if it is a string which passes a
    massless pug at the corner of the table and m1 is hanging on that string at the left
    side of the table and m2 is attached to the string on the right side which is also hanging
    on the string.
     
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