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Graphing problem

  1. Jun 17, 2009 #1
    Hi,
    Was wondering if someone could help me out with this simple graphing problem.

    Its a mass x acceleration graph. I have a constant force but an increasing mass e.g

    When plotting this graph I end up with a negative curve, as the mass increases, the acceleration decreases.

    I need to rearrange this to a straight line graph.

    pls help!

    Cheers.
     
  2. jcsd
  3. Jun 17, 2009 #2

    sylas

    User Avatar
    Science Advisor

    A common approach is to plot logs. When you have a power law between two variables, this gives a straight line. Many plotting programs provide an option to make one or both axes a log-scale. The gradient of a log graph lets you know the power of the relationship.
    [tex]\begin{align*}
    y &= x^n \\
    \log y &= n \log x
    \end{align*}[/tex]​

    Cheers -- sylas
     
  4. Jun 17, 2009 #3
    Hmm...

    Not sure thats going to work, but thats. probably should have explained the question better.

    Its not a negative curve, the curve represents deceleration in the positive direction (curve with decreasing gradient) and the force is not given. If worked out using F=ma the force varies.

    Not sure how to go about this one. Have tired rearranging using a=f/m but dont seem to be having much luck...

    probably something really simple I'm doing wrong
     
  5. Jun 17, 2009 #4
    Can anyone help me with this??:confused:
     
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