旋转纸牌轨迹的近似理论计算
收稿日期: 2021-03-01
修回日期: 2021-04-22
网络出版日期: 2021-10-15
基金资助
东南大学教学改革研究与实践项目( 2019-075)
Approximate theoretical calculation of the trajectories of rotating cards
Received date: 2021-03-01
Revised date: 2021-04-22
Online published: 2021-10-15
朱世栋, 黎秋航, 侯吉旋, 陈 乾 . 旋转纸牌轨迹的近似理论计算[J]. 大学物理, 2021 , 40(10) : 56 . DOI: 10.16854 / j.cnki.1000-0712.210097
has carried out theoretical analysis and certain experimental verification on the 17th
question " Playing Card" of the international Young Physicists Championship 2020 ( IYPT2020)
,and worked out a trajectory equation of a rotating card. Some rules of card’s movement
are discussed through parameter analysis. It is found that the main force affecting the
movement of card is the air resistance on the lower surface,which on the one hand
causes the precession of the card,on the other hand,produces the component force in three
directions through the precession,thus affecting the trajectory of the card.Finally,this paper
verifies the rationality of the theory by a self-designed card launcher.
Key words: IYPT; rotating rigid body; flat-plate flow; precession
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