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Homework Help: SHM - help please?

  1. Feb 11, 2006 #1
    ok so, my coursework is to measure the oscillations of a mass on a beam to prove that T^2 = k l^3 when k is a constant of proportionality. And basically when plotting the graph of my results, the first 8 results fit exactly on my line of best fit but the last two are completely off. These results where at the longest lengths of the beam. Would this affect the time period in any way? Would it be because there is a greater mass as there is more of the beam oscillating?
    Please help!
    Last edited: Feb 11, 2006
  2. jcsd
  3. Feb 11, 2006 #2
    The SHM-approximation fails at large oscillations so that's where your model might fail.
  4. Feb 12, 2006 #3
    does anyone know why this is?
  5. Feb 12, 2006 #4


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    lozzyjay, can you think of the reason? When you derived the equation for the time period, what approximation did you use?
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