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ERIC Number: EJ829394
Record Type: Journal
Publication Date: 2007-May
Pages: 16
Abstractor: As Provided
Reference Count: 28
ISSN: ISSN-0143-0807
The Falling Chain of Hopkins, Tait, Steele and Cayley
Wong, Chun Wa; Youn, Seo Ho; Yasui, Kosuke
European Journal of Physics, v28 n3 p385-400 May 2007
A uniform, flexible and frictionless chain falling link by link from a heap by the edge of a table falls with an acceleration g/3 if the motion is nonconservative, but g/2 if the motion is conservative, g being the acceleration due to gravity. Unable to construct such a falling chain, we use instead higher-dimensional versions of it. A home camcorder is used to measure the fall of a three-dimensional version called an "xyz"-slider. After frictional effects are corrected for, its vertical falling acceleration is found to be a[subscript x]/g = 0.328 plus or minus 0.004. This result agrees with the theoretical value of a[subscript x]/g = 1/3 for an ideal energy-conserving "xyz"-slider. (Contains 3 footnotes, 1 table, and 4 figures.)
Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A