BTW you can force them to have the same period by putting them between cycloids. This was discovered by Christiaan Huygens 350 years ago.pic.twitter.com/QfWvOlwkqE
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Aren't the pendulums in your gif all the same length?
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And a nice example of the Poincaré recurrence theorem. https://www.youtube.com/watch?v=oeVV6-rrj18 … https://en.wikipedia.org/wiki/Poincar%C3%A9_recurrence_theorem …
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For small oscillations the period of the pendulum is proportional to the square root of the lengthpic.twitter.com/8XKRTKcT45
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Actually directly proportional to the square root of length
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The period of a simple pendulum for small oscillations is not proportional to the length. Instead, it is proportional to the square root of its length.
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This swings both ways
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That Swings.