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Ideal Spring

  1. Jul 26, 2008 #1
    1. The problem statement, all variables and given/known data

    A car is hauling an 88 kg trailer, to which it is connected by a spring. The spring constant is 2350 N/m. The car accelerates with an acceleration of 0.29 m/s^2. By how much does the spring stretch?

    2. Relevant equations

    Fx -kx

    3. The attempt at a solution

    Fx -kx

    88(.29) = -2350x

    x = -0.01085957

    This seems right. I tried -.0109 and .-01086 but no luck with that either. Am I using the wrong formula?
     
  2. jcsd
  3. Jul 26, 2008 #2

    G01

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    Your method is correct. Maybe try dropping the negative. (They may be looking for a positive value for how far the spring stretched.)
     
  4. Jul 26, 2008 #3
    that worked. thanks.
     
  5. Jul 26, 2008 #4

    G01

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    Anytime.:smile:
     
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