1M20.11 - Pulleys and Pulley Systems

Code Number:
1M20.11
Demo Title:
Pulleys and Pulley Systems
Condition:
Good
Principle:
Work and Translation of Motion
Area of Study:
Mechanics

Disclaimer

Equipment:
Pulley Demo, Assorted Pulleys, and Hanging Masses.
Procedure:

The pulley demo may have to have new rubber bands or in place of the rubber bands some instructors prefer of have a hanging mass. There are two of the most complicated pulley system so that if the string falls off the pulleys on one set you can transfer to the other set without wasting a lot of time in class restringing.

References:
  • "Figuring Physics", TPT, Vol. 52, # 5, May 2014, p. 307.
  • "Figuring Physics", TPT, Vol. 52, # 4, April 2014, p. 198.
  • Paul Gluck, "The Pulley: A Parable of Effort and Reward", TPT, Vol. 50, # 8, Nov. 2012, p. 488.
  • Dennis Krause and Yifei Sun, "Can a String's Tension Exert a Torque on a Pulley?",  TPT, Vol. 49, # 4, p. 234, April 2011. 
  • H. Richard Crane, "Simple Devices that Fascinate - But Only Some People", TPT, Vol. 31, # 2, Feb. 1993, p. 120.
  • Lora Wilhite, "Good Lessons from Simple Machines", TPT, Vol. 16, # 9, Dec. 1978, p. 645.
  • Albert A. Bartlett, "What is (or was) White's Pulley?", TPT, Vol. 14, # 1, January 1976, p. 13.
  • Mario Iona, "More on White's Pulley", TPT, Vol. 14, # 5, May 1976, p. 260.
  • "What's a Spanish Burton?", TPT, Vol. 12, # 2, Feb. 1974, p. 84.
  • D. Williamson, "Teaching About Machines", TPT, Vol. 5, # 6, Sept. 1967, p. 289.
  • Donna Berry Conner, "A 'Universal' Mechanics Demonstration", A Potpourri of Physics Teaching Ideas, p. 11.
  • Vicki Cobb and Kathy Darling, "Friendly Get-Together", Bet You Can!, p. 88.
  • Borislaw Bilash II, “David versus Two Goliaths“, A Demo A Day – A Year of Physical Science Demonstrations, p. 262.
  • Borislaw Bilash II, “A Fool's Tackle“, A Demo A Day – A Year of Physical Science Demonstrations, p. 263.
  • Julius Sumner Miller, Q184 & A184, Millergrams II – Some More Enchanting Questions for Enquiring Minds, p. 49 & 102.
  • Julius Sumner Miller, Q200 & A200, Millergrams II – Some More Enchanting Questions for Enquiring Minds, p. 58 & 108.
  • Aubrey F. Burstall, "The Simple Pulley", Simple Working Models of Historic Machines, p. 32.
  • Aubrey F. Burstall, "Simple Pulley with Rachet and Pawl", Simple Working Models of Historic Machines, p. 34.
  • Aubrey F. Burstall, "Multiple Pulleys", Simple Working Models of Historic Machines, p. 36.
  • Joseph Frick, "# 57 & 58 - The Pulley", Physical Technics: Or, Practical Instructions for Making Experiments in Physics and the Construction of Physical Apparatus with the Most Limited Means, p. 66.
  • "The Pulleys", Pike's Illustrated Catalogue of Scientific & Medical Instruments, 1984, p. 146.
  • The Queen Catalogues, Catalogue of Physical Instruments, No. 4103-4104, p. 13.
PDF icon University of Maryland Physics Department QOTW Question #175
PDF icon University of Maryland Physics Department QOTW Answer #175

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.