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Cole.
Cole. is offline
#3
Nov22-11, 04:00 PM
P: 7
Ach thanks your reference to compound pendulum got me on the right track.
It's all about the center of mass:
[itex]I \theta '' = -M_{cm} g L_{cm} sin \theta
\Leftrightarrow \theta '' = -\dfrac{3 g}{2 L} sin (\theta)[/itex]