Pendulum experiment

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course Phy 231

For 30 cycles of the long pendulum, the short one cycled 66 times when swinging under 2 cm. It cycled 65 times when we increased amplitude of the small pendulum to between 5 and 8 centimeters. Or, 30:66 ratio the first time (long cycles to short cycles) and 30:65 ratio the second.

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Very good.

The ideal theoretical ratio would be sqrt(44/8.5), about 2.28. Your ratios were 2.20 and 2.17.

This being a real-world situation, it would be interesting to analyze the behavior of a pendulum swinging in air with a slightly flexible support (i.e., you) to see the those factors could explain the differences in the ratios.

Of course the differences could also be due just to experimental uncertainties.

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