It's an equilibrium price, because we also added to it a lot of Newtonian physics equations where centers of gravity are very much part of the organizing principle.
This keeps your center of gravity directly over your base of support, which allows you to move efficiently with the least amount of fatigue and muscle strain.
Don, Donald Trump has been the center of gravity in the campaign, and the buildup to this debate was really all about Trump's battles with the other candidates.
Never in its wildest imagination would it have thought that that Camarasaurus would shift its center of gravity, free those giant front feet, and crush that Allosaurus like it was a bug.
These are really big dinosaurs with massive tails, but their body design is perfectly balanced, so that their center of gravity is directly over their hips.