A simple pendulum of unknown length was found to execute 100 oscillations in 375.6s. The length was then reduced by 50,100,150,200 and 250cm, and the corresponding times of 100 oscillations were found to be 347.7, 317.4,283.9, 245.9 and 200.7: find by calculation the original length of the pendulum?(adsbygoogle = window.adsbygoogle || []).push({});

The only formula I know is T=2(pi)sqr(l/g), I have no idea of how to start. Thanks in advance.I can always plot a graph and find it, but I do not know by calculation.

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# Homework Help: Simple Pendulum Question

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