Rémond Théophile, Dolique Vincent, Rinaldi Renaud G, Géminard Jean-Christophe
<a href="https://ror.org/00w5ay796">LPENSL</a>, CNRS UMR5672, ENS de Lyon, Université Lyon, F-69342 Lyon, France.
<a href="https://ror.org/01rnfhz46">MATEIS</a>, CNRS UMR 5521, INSA-Lyon, Université Lyon, F-69621 Villeurbanne, France.
Phys Rev E. 2024 Jul;110(1-2):015002. doi: 10.1103/PhysRevE.110.015002.
We report on an experimental study of the normal impact on a solid surface of a table tennis ball that rotates around its linear velocity vector. We observe that the ratio of the reflected velocity to the incident velocity does not depend on the initial spin. In contrast, the reflected spin depends not only on the incident spin but also on the incident velocity. The experimental results, which reveal the tricky role played by the friction in the region of contact, are accounted for by simple theoretical arguments.
我们报告了一项关于绕其线速度矢量旋转的乒乓球对固体表面正常撞击的实验研究。我们观察到，反射速度与入射速度之比不取决于初始旋转。相比之下，反射旋转不仅取决于入射旋转，还取决于入射速度。揭示了接触区域摩擦力所起的微妙作用的实验结果，通过简单的理论论证得到了解释。
