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Centripetal force experiment help

  1. Apr 28, 2012 #1
    i am confused.i need help with this experiment.

    experiment set up:
    http://img155.imageshack.us/img155/4027/20120428151358.png [Broken]

    1.measure total mass M of the crocodile clip and load.(in gram)
    2.measure a length L of the string from the glass tube.
    3.hold the tube vertically and whirl the rubber bung around.
    4.measure the time t required for the bung to complete 50 revolutions.
    5.repeat step 2-3 using different L.
    6.plot t^2 against L.
    7.prove [PLAIN]http://img577.imageshack.us/img577/7543/20120428153604.png [Broken] [Broken]

    how to prove[PLAIN]http://img577.imageshack.us/img577/7543/20120428153604.png [Broken] [Broken] by using Mg=mLω^2 and ω=2∏/T(period)?
     
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Apr 28, 2012 #2

    K^2

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    Science Advisor

    Solve your equations for t(L). What is the slope of f(L)=t²(L)?
     
  4. Apr 28, 2012 #3
    slope=t²/L
     
  5. Apr 28, 2012 #4

    K^2

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    Science Advisor

    Well, yeah, but what's t²?
     
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