The barrels are filled with water, and the water can be pumped from barrel to barrel in order to test different centers of gravity while the aircraft is in flight.
Among passenger vehicles, full-sized spares are usually provided for sport utility vehicles and light trucks, since a limited use spare would adversely affect such vehicles with higher centers of gravity.
Meshes can also be assigned weights and centers of gravity for use in physical simulation.
Fermat also obtained a technique for finding the centers of gravity of various plane and solid figures, which influenced further work in quadrature.
In it, the body's three centers of gravity are aligned on a vertical axis of gravity.
In its present form, the model also does not incorporate specific bodily parameters such as muscle anatomy, segment masses, and centers of gravity, or joint configurations.
