Well, gravity is somewhat distinct from FE per se. I'm not sure why the two get conflated all the time.
I think you are missing my point. I find no connection of significance between gravity and FE. It's just that you have a problem with both gravity and GE, and seem to think your FE proof videos are so worthy of belief, when they seem no better than this proof of mass based gravity video.
Correct Ladislaus. It is as simple as that. This video is trying to prove Newton's universal theory of gravity that is also used to show how the universe came together and evolved into a heliocentric solar system after their Big Bang. Of importance to this experiment for them is that two of the balls are hanging so they can swing in the air. If he put the balls on a table, a tiny steel ball-bearing beside a huge cannon ball on a glass surface and they moved towards one another that would prove gravity. No, he uses the Foucault Pendulum method of swinging balls so when they move by some inertia he can claim his theory does it. It is some inertia that causes things like the Coriolis force.
I don't think the swinging is intentional, just tolerated. The result seems independent of the swinging, but the swinging obviously exists, and so must be taken into account and compensated for like they do in the video.
The way I see it is that the point of suspending the weights isn't so they can swing like a pendulum, but is rather an easy way of greatly reducing interfering forces of friction and bonding caused by surface to surface contact, leaving only the torque resistance of the suspending wire and air resistance if present.
Perhaps the force exerted by light should be considered since the large stationary masses will block some light from getting to the suspended masses, and if the light doesn't push them together, maybe surface heating on the better lit side causing the air to expand might push them. Or would the higher density air on the cold side push them?
See how we can't so easily stop with one experiment? Many more angles need to be explored to prove how reliable the first experiment was.
Also, I've never known common electromagnetism to affect gravity. It seems to be a completely separate force, like how my muscles can counter gravity, yet they are not related to gravity.