PURPOSE: Show stability in system where the center of mass is outside of the object.

DESCRIPTION: As the bear rolls along the tightrope, it remains stable because its center of mass is below the rope. Removing the weights and poles renders the system unstable.

SUGGESTIONS:

REFERENCES: (PIRA 1J20.45)

EQUIPMENT: Bear on unicycle with detachable weight poles, string.

SETUP TIME: None.