PIRA 1J20.60 Stable, Unstable, Neutral Equilibrium: Wine Butler

Photo Shows the Demonstration Used by the University of Texas at Austin.

• A small piece of wood has a hole to hold the neck of the wine bottle.

• The wood will not balance on its end alone, but it will balance when the neck of the wine bottle is through the hole.

Last Updated 7/24 - University of Texas at Austin Physics Dept. - All Rights Reserved.