Recent content by Greg23

"Greg23: I'm not trying to get work out of it. Sorry if my wording was wrong." You wording seems fine. But, again a WAG, it seems that any metal object moving in a magnetic field will have eddy currents generated inside the metal. There is a YouTube video showing a magnet falling in a...

"...metal suspended between two magnets...in motion..." WAG here, but eddy currents might come into play and eventually damp the system.

I'm afraid I'm not following the ice block scenario. If the ruler were "flat" and frictionless I would expect to see results consistent with a rigid mechanical system, pivoting around some point. In any case, a new system is being suggested, but I'd prefer to better define this one. Imagine...

With the ruler's short edge vertical there will be several oscillations if I impart a large force. The same will be true in a near-zero environment. It is essentially a spring (although a poor one). Gravity is irrelevant. I understand that as the near end pulls the center section forward it...

A "Reverse" Startup Oscillation? I have a very flexible plastic ruler 61cm long, 5cm wide, and .2cm thick. I hold it by one end, with the "width" vertical, and sight along the ruler "aiming" at any vertical edge (like a door jamb). When I quickly move the ruler to the left a couple of...