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Homework Help: Please help with lab experiment

  1. Sep 29, 2008 #1
    1. The problem statement, all variables and given/known data

    We did an experiment mimicking how there's force between the moon and earth. I just want to know how the graph should be between 1.time and Force of centripetal and 2. velocity and Force of centripedal.
    is it proportional, inversely proportional, or increases as the other variable increases.

    2. Relevant equations
    F=Mass x gravity
    velocity= 2pie times radius which is 2.2m

    3. The attempt at a solution
    this is my data.
    kg Fcp=force of centripedal T(s) velocity
    .050 .49N .94s 1.34m/s
    .070 .69N .70s 1.8 m/s
    .090 .88N .68s 1.9 m/s
    .110 1.08N .48s 2.63m/s
    .130 1.27N .51s 2.46m/s
    .150 1.47N .47 2.67m/s
    .170 1.67N .39 3.22m/s

    For the time vs. Fcp I believe it looks like a proportional graph.
    However for velocity vs. Fcp, I'm not sure if its proportional or increases as the other variable increase.

    Thank you for all helps and input
  2. jcsd
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