3A95.50 - Chaos Pendula - Chaos Toys

Code Number:
3A95.50
Demo Title:
Chaos Pendula - Chaos Toys
Condition:
Excellent
Principle:
Potential to Kinetic Energy, Simple Harmonic Motion
Area of Study:
Acoustics
Equipment:
Chaos Pendulums, Double Planar Pendulum, Toy Pendulum Models, and Alogo Pendulum (Ring Pendulum).
Procedure:

See also 3A95.50 in Ocillations/Acoustics.

The double planar pendulum shows what the addition of another degree of freedom does to the behavior of a pendulum.  The chaos Pendula are designed so that you may go from one degree of freedom to 5 degrees of freedom in many different configurations, usually used for a deeper understanding of chaotic behavior.

The Alogo pendulum may be started with either the ring in the upward or the downward position by adding the proper counter weight.

Video Credit: Daniel Reinart.

References:
  • Fabio Augusto Meira Cassaro, Sergio da Costa Saab, Luiz Antonio Bastos Bernardes, and Jeremias Borges da Silva, "The 'Sparking Chaotic Pendulum': Trajectories of a Chaotic Pendulum Revealed", TPT, Vol. 42, #1, Jan. 2004, p. 47. 
  • Douglas Oliver, "A Chaotic Pendulum", TPT, Vol. 37, #3, Mar. 1999, p. 174.
  • R. W. Robinett and P. E. Sokol, "Investigating Physical Pendula with K’NEXTM", TPT, Vol. 34, #7, Oct. 1996, p. 427.
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  • Robert DeSerio, "Parts List for Chaotic Pendulum Experiment".
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  • Robert DeSerio, "Chaotic Pendulum", University of Florida, Feb. 2007, CP 1.
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Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist.  The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose.  The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources.  Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks.  These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage.  Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.