Center of gravity: Facts

while the center of gravity for a set of points is located at the spot from which the sum of the squares of distances to all the points is minimized, the geometric median is the spot from which the sum of distances is minimized?
the nose of the F+W C-3605 had to be stretched by six feet (1.8 m) to balance its center of gravity?
the Busette, in 1973, was the first successful small school bus to be built on a cutaway van chassis with a low center of gravity and dual rear wheels?
Steadicam camera magazines are specially designed with a pair of moving spindles that gradually change position as the film rolls through the camera in order to maintain a steady center of gravity?

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