1M40.15 - Stopped Pendulum

Code Number:
1M40.15
Demo Title:
Stopped Pendulum
Condition:
Excellent
Principle:
Potential to Kinetic Energy, Simple Harmonic Motion
Area of Study:
Mechanics

Disclaimer

Equipment:
Stopped Pendulum.
Procedure:

The pendulum should be set with a variable right angle clamp holding the stop rod.  Practice will be needed so that the stop rod can be turned into place at the proper time of the pendulum motion.

References:
  • Bob Froehlich, "Revisiting the Interrupted Pendulum with Large Data Sets", TPT, Vol. 57, #2, Feb. 2019, p. 122.
  • Bradley E. Miller, "Period of an Interrupted Pendulum", TPT, Vol. 40, #8, Nov 2002, p. 476.
  • Herbert T. Wood, "The Interrupted Pendulum", TPT, Vol. 32, #7, Oct. 1994, p. 422.
  • J. P. Adams, "Incomplete Pendulum Interruption", TPT, Vol. 32, #9, Dec. 1994, p. 516.
  • John C. Pratt, "A Circular and Projectile Motion Puzzle", TPT, Vol. 32, #5, May 1994, p. 287.
  • "Solution to Puzzle on Page 287", TPT, Vol. 32, #5, May 1994, p. 303.
  • Salvador Gil, Daniel E. Di Gregorio, "Nonisochronism in the Interrupted Pendulum", AJP, Vol. 71, #11, Nov. 2003, p. 1115.
  • Mr-3, Freier and Anderson, A Demonstration Handbook For Physics Pendulums.
  • M-414, "Bowl Ball & Galileo's Pendulum", DICK and RAE Physics Demo Notebook.
  • M-132: Richard Manliffe Sutton, Demonstration Experiments in Physics.
  • Borislaw Bilash II and David Maiullo, "Stop That Pendulum!", A Demo a Day: A Year of Physics Demonstrations, p. 94.
  • Robert L. Wild, "Interrupted Pendulum", Low-Cost Physics Demonstrations, #45, p. 30.
  • Robert Ehrlich, "The Interrupted Pendulum", Why Toast Lands Jelly-Side Down, p. 96.
PDF icon University of Maryland Physics Department QOTW Question #109
PDF icon University of Maryland Physics Department QOTW Answer #109


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.