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Theoretical Curve Graph vs Straight Line

  1. Sep 11, 2013 #1
    1. The problem statement, all variables and given/known data
    What could be the reason why the graph is formed the way it is?


    2. Relevant equations

    τ = 2π(L/g)^(1/2)

    3. The attempt at a solution
    I don't know how to explain it. Anyone know why one is a linear and another is a curve?
     

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  2. jcsd
  3. Sep 11, 2013 #2

    Dick

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    An equation of the form y=ax+b is the most general form a linear equation. If you square your original equation can you see how it must have a linear form if y=τ^2 and x=L?
     
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