I play in the street.
Join Date: Jul 2005
Location: College: K-State; Home: Overland Park, KS
Bikes: 2005 Allez Triple, 1971 Schwinn Varsity Fixed Gear Conversion
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If the length of the pedulum gets longer, the period will get longer. Also, as temperature increases, the air becomes less dense, so there is less air resistance, but that would hardly make a difference either. So I don't know what that's all about. But basically, I'd pick something with a long pendulum and a dense, heavy mass. This would have a low velocity, reducing air resistance, the heavy mass would minimize any inertia effects from the string, and rotational friction from the pivot would have a relatively very small torque.