The motion of curling rocks: Experimental investigation and semi-phenomenological description

A large number of curling shots using a wide range of rotational and translational velocities on two different ice surfaces have been recorded and analyzed. The observed curling-rock trajectories are described in terms of a semi-phenomenological model. The data are found to rule out "dry-fricti...

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Bibliographic Details
Published inCanadian journal of physics Vol. 82; no. 10; pp. 791 - 809
Main Authors Jensen, E T, Shegelski, Mark RA
Format Journal Article
LanguageEnglish
Published Ottawa, Canada NRC Research Press 01.10.2004
Canadian Science Publishing NRC Research Press
Subjects
Curling
Friction
Ice
Movement
Physics
Rocks
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Summary:A large number of curling shots using a wide range of rotational and translational velocities on two different ice surfaces have been recorded and analyzed. The observed curling-rock trajectories are described in terms of a semi-phenomenological model. The data are found to rule out "dry-friction" models for the observed motion, and to support the idea that the curling rock rides upon a thin liquid film created at the ice surface (i.e., "wet friction"). Evidence is found to support the hypothesis that the frictional force acting upon each segment of the curling rock is directed opposite to the motion relative to this thin liquid film and not relative to the underlying fixed ice surface. PACS No.: 01.80.+b
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0008-4204
1208-6045
DOI:10.1139/p04-020