I have puzzled about this for a long time and then the other night the answer clicked.Grimer wrote:Now there seems to be a lull in the proceedings I'll take the opportunity to make a post on topic.
The above image is a screen shot from Tarsier79's gpm.wm2d sim.
It shows the state of the pendulums after the second impact. As you can see the pendulums have reset perfectly, albeit in a stationary position. This position is maintained for 7 seconds.
If the SP and CP were locked together at that point one would have a perfectly balanced beam, but a completely stationary beam, ergo, no Ersatz gravity energy.
Laithwaite's movement of mass has be achieved but there is no conversion of Newtonian gravity energy into Ersatz gravity energy (angular momentum).
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Tarsier has exorcised Maxwell's Demon.
Well done cobber. Your name will go down in history as the first man to defy second law of thermodynamics. You have shown that you can take two bodies at the same gravitational potential and without bringing external energy into the system end up with one of the bodies at a higher potential gravitational energy and the other at a lower potential gravitational energy.
This is equivalent to taking a body of water at 10°C and changing it into ice and hot water.
Congratulations. :-)