Central Forces - Broken Ring



MPEG Movie (1.61 MB)

content.gif (1503 bytes)
 Code Number :   1D55.10

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

The demonstrations contained and referenced herein are listed for the purposes of cataloging and describing physics demonstrations which should be conducted only under the direction of a trained instructional support professional or physicist. These demonstrations are not presented for the purpose of being conducted by persons unconnected to this Facility and/or persons not consulting with or being supervised by the recognized instructional support professional or physicist and his/her staff. The University is responsible only for those demonstrations carried out using its own equipment using established safety and scheduling policies, and bears no responsibility for those choosing to use this source material for their own purposes. All demonstrations described and contained herein are public domain, and can also be found in reference materials in libraries, bookstores, and electronic sources.

Further information regarding legal liability in use of demonstrations and labs will be found on the web site Injuries in School/College Laboratories in USA.

The University of Iowa Disclaimers:  U of Iowa Disclaimer All Rights Reserved.
Condition :   Good  
Principle :   Forces Due To Circular Motion   
Area of Study :  Mechanics  
Equipment :   3/4 arc steel and plastic rings, 1" ball bearings.

 
Procedure :   Set the arc on the table or overhead projector.  Roll the ball bearing against the inside of the arc.  When the ball bearing reaches the end of the arc it will exit and roll in a straight line.
conbot.gif (53 bytes)

 

   Web Sites

Question #44 and #82 from http://www.physics.umd.edu/lecdem/outreach/QOTW/arch3/q044.htm

http://www.physics.umd.edu/lecdem/outreach/QOTW/arch5/q082.htm

 

   References

Harry Rheam,  "Centripetal Force on an Overhead Projector,"  TPT, Vol. 33, # 3, p. 182, (March 1995).

Jonathan Mitschele, "A New Use for an Old Pickle Bucket", TPT, Vol. 32, # 4, Apr. 1994, p. 252.

 

Robert Ehrlich,  "The Missing Circular Arc,"  Why Toast Lands Jelly-Side Down, p.  22- 23.

James Cunningham and Norman Herr,  "Newton's First Law,"  Hands-On Physics Activities with Real-Life Applications, p.  58, 67.

 



Mail Questions and Comments to:  Dale Stille