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Conservation of Angular Momentum
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Conservation of Angular Momentum

Demonstrating Conservation of Angular Momentum

Using a Turntable and Hammers

  • The speaker introduces the concept of conservation of angular momentum, comparing it to a figure skater's spin.
  • A turntable is used as an alternative demonstration tool, along with two hammers held at arm's length.
  • The speaker begins spinning slowly while holding the hammers outwards to create a larger radius for the demonstration.
  • This setup aims to illustrate how angular momentum is conserved during rotation, similar to how a skater pulls in their arms to spin faster.
  • The initial conditions are established: constant speed and extended arms, setting the stage for further exploration of angular momentum principles.
Video description

Demonstration of the Conservation of Angular Momentum in the context of Newton's formulation of Kepler's Second Law of Planetary Motion. Recorded 2015 June 2 by Prof. Richard Pogge, The Ohio State University