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Homework Help: Spring scale Problem

  1. Oct 4, 2009 #1
    1. The problem statement, all variables and given/known data
    You use a spring scale to pull a 1.5 kg object on a horizontal frictionless surface with a constant horizontal force of 1.3 N (according to the scale reading). You use a stopwatch to time how long it takes the object, starting from rest, to cover a distance of 2.7 m. What is the reading of the stopwatch?

    2. Relevant equations
    [tex]\Delta X=VoT+.5aT^2[/tex]

    3. The attempt at a solution
    So I did a=F/m to get the acceleration then plugged that into [tex]\Delta[/tex] X=VoT+.5aT^2 and Vo is equal to 0. After i plugged it all in I got 2.49, is that right? For some reason it seems wrong.
  2. jcsd
  3. Oct 4, 2009 #2
    On a side note, is possible to find k using f=kx?
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