Code Number: 3A15.10

Demo Title: Physical Pendulum - Smart Phone

Condition: Excellent

Principle: Potential to Kinetic Energy, Simple Harmonic Motion

Area of Study: Oscillations & Acoustics

Equipment:

Physical pendulum or bike wheel, Smart phone.

Procedure:

Smart phones have 3 axis gyroscopes or accelerometers in them. These can be used to take measurements of a swinging or rotating system.

References:

Martin Monteiro, Cecilia Cabeza, Arturo C. Marti, "Rotational Energy in a Physcial Pendulum", TPT, Vol. 52, # 3, March 2014, p. 180.
Robert Ehrlich, "8.2, Swinging your Arms While Walking", Why Toast Lands Jelly-Side Down, p. 122.

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.

Instructional Resources and Lecture Demonstrations

3A15.10 - Physical Pendulum - Smart Phone

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