PURPOSE: To demonstrate conservation of energy and conservation of linear momentum in multiple elastic collisions.

DESCRIPTION: To start, hold one, two, three, or four balls to the side and release. Symmetric oscillations result from conservation of energy and conservation of linear momentum in the collision sequence.

Click your mouse on the photograph above to see an mpeg video of the action.

SUGGESTIONS: For best results make sure balls are well aligned.

REFERENCES: (PIRA 1N30.10)

EQUIPMENT: Collision ball apparatus, as photographed.

SETUP TIME: None.