PIRA Classification: 1J11.10
Description: A small model of the Leaning Tower of Pisa stands on the lecture bench, minus its top. When the top is placed on the tower, the center of gravity is no longer over the base and the tower tips. If the tower is placed on an incline, it will remain standing when the top is placed on the tower.
Special Instructions: The tower just manages to stay upright. Some care must be taken when setting it up.
Setup time: 1 minute
Safety Issues: None