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Two Pendulums

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Phil Todd



If a pendulum’s motion is small, its period is the square root of its length divided by g.  What happens if the pendulum’s motion is not small?

Experiment with these two pendulums.  Pull one to about a 20 degree angle to vertical and the other to about a 70 degree angle.  Do they have the same period?

Tags: tautochrone, pendulum, period
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