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Homework Help: Magnitude of acceleration

  1. Oct 13, 2008 #1
    1. The problem statement, all variables and given/known data
    A 30.3kg girl and a 56.0kg boy are on the surface of a frozen lake, 15.0m apart. Using a rope, the girl exerts a horizontal 4.50N force on the boy, pulling him toward her. Calculate the magnitude of the girl's acceleration.

    so for this problem i am just confused about the equation to use. i know that it will use a frictionless equation but that is about all that i am sure of.
     
  2. jcsd
  3. Oct 13, 2008 #2
    oh, and i had tried F=ma but that was wrong
     
  4. Oct 13, 2008 #3

    G01

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    OK. So, you tried F=ma. That is the equation you should use. I'll need to see your work to help you find your mistake.
     
  5. Oct 13, 2008 #4
    i figured it out, i was using the guys m and that was the problem
     
  6. Oct 13, 2008 #5

    G01

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    OK cool! Good job.
     
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