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

• 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.

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

Drawing is by Courtesy of the University of Minnesota.

Last Updated 2023 - University of Texas at Austin Physics Dept. - All Rights Reserved.