You have to do this with a rotating system because of space considerations and I think the globe is really neat, but …
I have to pick nits here. I really wish the video makers/interviewer had drawn a better distinction between the granite globe and the earth. The globe in the video was certainly not created spinning as it is, and we know there is friction, so asking why it’s spinning (or not stopping, at about the 1:00 mark) is really the wrong question if you are going to discount answers that say it’s because there’s a force (or torque) on it. I’m not sure if I wouldn’t interpret “it’s not stopping” as meaning that it’s simply not coming to a stop while I’m watching it, rather than it will not come to a stop over a much longer period of time. A key in all this is the identification of friction as a force and not some inherent property — that sometimes requires some mental untangling. You have to be sure you’ve done that for a successful misconceptionectomy.
Plus, we know that the earth is slowing down as it trades angular momentum with the moon.
Conservation of angular momentum the property is coupled to vacuum isotropy the symmetry through Noether’s theorems. A macroscopic massed body displaying non-zero minimum angular momentum requires an anisotropic vacuum background loophole, or exploits a symmetry to which Noether’s theorems do not apply.
The Tully-Fisher law says spiral galaxy rotation with increasing radius is impossible given visible mass distribution. A spherical mass distribution in which visible mass is 17% of total mass works, hence the cult of dark matter. Alas, MOND universally fits all Tully-Fisher with a single Milgrom acceleratiorn, less than a ppb m/sec^2 addend. Choose between universal galactic masses of Star Trek TNG crapitons, or a testable sub-ppb Noetherean loophole. Extraordinary claims require extraordinary proof.
Noether does not include absolute discontinuous symmetries, of which there is only one accessible: parity, the sudden inversion of all coordinate signs in a chiral geometry. Dark matter vanishes and MOND is validated if the vacuum has a chiral anisotropic background active only toward fermionic mass. If the vacuum is a left foot, then left and right shoes will fall through it differently – and with maximum divergence. The divergence will be consistent with Milgrom acceleration.
Consider a single crystal in which every atom is contained within three-fold helices spanning the entire length of the solid. All the helices are parallel and in-phase (translational symmetry), arrayed as a periodic lattice. All the helices are either right-handed or left-handed – our pair of shoes. That is the paired alpha-quartz structure, 79.64 atoms/nm^3. That is the paired gamma-glycine structure, 127.1 atoms/nm^3. If you want a ball that spins of its own accord, barely but measurably non-zero,
http://www.mazepath.com/uncleal/erotor1.jpg
Two geometric parity Eotvos experiments. 5×10^(-14) difference/average sensitivity.
The worst it can do is succeed, uncreating dark matter. Theory predicts what observation tells it to predict. OK… music video!
http://www.youtube.com/watch?v=o7kzsZreG0o
I loaded quartz in that balanced Eötvös rotor
And by some chance found a signal in its chart,
And there it hung, rotor torquing out the scandal,
But the physicists all were loathe to take part…
For professors all said, “Beware!
You’re on a gravity trip.”
The profs all said, “Beware!
Keep your hands off scholarship.”
And a chemist will drag you under
By the fancy shoes on his wicked feet.
Sit down, sit down, sit down, sit down,
Sit down you’re rockin’ the boat.
Somebody should look. Science is about empirical discovery not theoretical faith.
I hope you have looked at some of the other Veritasium videos, especially the very interesting one about the Khan Academy.