I'm trying to work out the percentage error in working out the value of gravity,g, from a pendulums motion.(adsbygoogle = window.adsbygoogle || []).push({});

i know that percentage error is (possible error/value used)*100 however im using multiple values multiple times and its getting a little confusing.

In the investigation g=k(∆T²/∆L), my problem is that i have the error for working out T which is 0.001 seconds. The error in L is 0.001m. As i'm using a difference of two values for each of the ∆'s would i double each error and for the error of T² would i square 0.001 and then double it.

any explainations would be helpful

Thanks

∆T²=2.112 ∆L=0.51

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# Error calculations involving gradients

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