PURPOSE: To demonstrate motion of the center of mass of an asymmetric object.

DESCRIPTION: A barbell with unequal ends is thrown through the air. The center of mass (red spot near large end) moves in a smooth parabolic arc despite the gyrations of the two asymmetric ends.

SUGGESTIONS:

REFERENCES: (PIRA 1D40.30)

EQUIPMENT: Barbell, as photographed.

SETUP TIME: None.