UIUC Physics
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Demo # 665

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Leaning Tower

ID # 665

Description:

The tower will remain standing as long as its center of mass is located over its base. When the top of the tower is placed on it, the tower's center of mass is now located in a different place - a place not over the base - and the tower falls over as a result.

Picture of Leaning Tower

Physics Concept:

  • Mechanics
  • Rigid Bodies and Static Equilibrium
  • Center of Mass

The demonstration takes about 1 minute to perform.

© Dept. of Physics, Univ. of Illinois at Urbana-Champaign, 1996.