PURPOSE: To demonstrate a center of mass paradox.

DESCRIPTION: When the double cone is placed on the narrow end of the V-shaped rails it rolls to the wide end. The double cone appears to be rolling uphill, but in reality the center of mass is moving down.

SUGGESTIONS:

REFERENCES:

EQUIPMENT: Double cone on rails, as photographed.

SETUP TIME: None.

	Go back to Lecture-Demonstration Home Page.
	If you have a question or comment, send an e-mail to Lecture Demonstrations Coordinator: Jerry Hester