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arXiv:2203.00347 (physics)
[Submitted on 1 Mar 2022]

Title:Study of curling mechanism by precision kinematic measurements of curling stone's motion

Authors:Jiro Murata
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Abstract:Why do curling stones curl? That is a question physicists are often asked, yet no answer has been established. Stones rotating clockwise curl right, contrary to our naive expectations. After a century of debate between contradicting hypotheses, this paper provides the answer based on experimental evidence. A digital image analysis technique was used to perform precision kinematic measurements of a curling stone's motion to identify the curling mechanism. We observed a significant left-right asymmetric friction due to velocity dependence on the friction constant. Combined with the discrete point-like nature of the friction between ice and stone, swinging around slow-side friction points has been concluded as the dominant origin of the curling. Many new angular momentum transfer phenomena have been found, supporting this conclusion.
Subjects: Popular Physics (physics.pop-ph)
Cite as: arXiv:2203.00347 [physics.pop-ph]
  (or arXiv:2203.00347v1 [physics.pop-ph] for this version)
  https://doi.org/10.48550/arXiv.2203.00347
Journal reference: Scientific Reports 12, 15047 (2022)
Related DOI: https://doi.org/10.1038/s41598-022-19303-4

Submission history

From: Jiro Murata [view email]
[v1] Tue, 1 Mar 2022 10:48:43 UTC (920 KB)
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