Re: Gravity and attenuation of a pendulum

I want to make something similar to that toy, but not using magnetism.

I want to take a 15 foot steel beam, and mount lead weights on the
ends. Each weight would be about 10 or 20 tons. This thing is mounted
on a bearing and it spins, axis of rotation pointing stright up.

A very precise pendelum, maybe in a vacuum, maybe it has magnetic
bearings, whatever -

The pendulum is initially motionless, and you are trying to induce
oscillations using gravity.

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