@article{WANG2024, 
author = {Liangyi WANG and Yongkun CHEGN and Ruochen XU and Xingcheng QIN},
title = {THE MOTION OF A SMALL BALL ON A CIRCULAR ORBIT},
year = {2024},
journal = {Physics and Engineering},
volume = {34},
number = {3},
pages = {140-144},
keywords = {small balls, circular orbit, rigid body},
url = {https://www.sciopen.com/article/10.26599/PHYS.2024.9320322},
doi = {10.26599/PHYS.2024.9320322},
abstract = {A small ball can perform pure rolling, as well as rolling and sliding motion on a rough circular orbit. Using the theorem of center of mass motion and the theorem of angular momentum of the particle system, it is concluded that the motion of a small ball on a circular orbit is closely related to the dynamic friction coefficient. The motion of a small ball on a rough circular track is significantly different from that of a small slider on a rough circular track. The rotation of the small ball cannot be ignored and cannot be processed as a particle model. To avoid the influence of rotation, it is recommended to select the object as a small slider when setting the problem of controlling the movement of an object on a circular orbit in middle school.}
}