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Springs and motion of car

  1. Dec 8, 2006 #1
    1. The problem statement, all variables and given/known data
    A car towing a 92 kg trailor with a spring between the car and the trailor. the accelertion of the car is .3. the spring constant is 2300
    how far is the spring stretched

    2. Relevant equations

    3. The attempt at a solution


    i am not sure if that was legal
  2. jcsd
  3. Dec 8, 2006 #2


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    Homework Helper

    It is legal, but it rests on several assumptions.

    1) That the units of a are m/s²

    2) That the units of k are N/m

    3) That the acceleration of the trailor is constant- the length of the spring is constant. In reality, it would not be if the car started moving with constant acceleration at some point in time.
  4. Dec 8, 2006 #3
    thanks for the help
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