Date: Tue, 8 Oct 2002 15:17:23 -0400

Author: jfeliciano@notes.cc.sunysb.edu

Subject: coupled pendulum for the overhead projector

Post:


Does anyone have some specs on a coupled pendulum for the overhead
projector that uses two rigid pendulums that are horizontal and are coupled
with a spring between them. I tried using some stainless steel reeds that
I cut into 1/4 inch wide 7 1/2 inch long, and hung a brass cylinder on the
bottom for the mass. The frequencies of the pendulums didn't match, so the
system didn't work as advertised. The reeds are installed inside a frame
that is 8" square and 1" deep.

Joe

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