Centripetal force experiment help

AI Thread Summary
The discussion focuses on conducting a centripetal force experiment involving a rubber bung, string, and a crocodile clip. Key steps include measuring the total mass, string length, and the time for 50 revolutions while varying the string length. Participants seek clarification on how to derive the relationship between time squared (t²) and string length (L) to prove the equation Mg = mLω². The conversation emphasizes the need to solve for t(L) and understand the slope of the plotted graph. Overall, the aim is to clarify the mathematical relationships involved in the experiment.
kisha
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i am confused.i need help with this experiment.

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

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

how to prove[PLAIN]http://img577.imageshack.us/img577/7543/20120428153604.png by using Mg=mLω^2 and ω=2∏/T(period)?
 
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Solve your equations for t(L). What is the slope of f(L)=t²(L)?
 
slope=t²/L
 
Well, yeah, but what's t²?
 

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