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カジヤマ ユウジ
Yuji Kajiyama
梶山 裕二 所属 教育学部 職種 准教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2021/03 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Motion of a Rolling Hula Hoop |
| 執筆形態 | 共著 |
| 掲載誌名 | The Physics Educator |
| 掲載区分 | 国外 |
| 出版社・発行元 | World Scientific |
| 巻・号・頁 | 3(1),pp.2150002-1-2150002-6 |
| 総ページ数 | 6 |
| 著者・共著者 | Yuji Kajiyama, Koki Higuchi |
| 概要 | If one rolls a vertically standing hula hoop forward with backspin applied, it moves once far away and then eventually back to hand. In this paper, we study such a motion of a rolling hula hoop from both theoretical and experimental aspects. The hula hoop is rolling with slipping immediately after it leaves the hand, and its motion will transit to that of without slipping due to the transition of the frictional force from kinetic friction to static friction. We show that the experimental results analyzed by Tracker software can be well described by equations of motion that take into account the deformation of the hula hoop. Theoretical and experimental studies in this paper are suitable for university students in physics courses. The video analyzed in this paper can be viewed at https://youtu.be/i4j1lDhCI2os. |