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The Ball on the Rubber Band

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DOI: 10.23977/jemm.2022.070401 | Downloads: 9 | Views: 107


Yifei Zhang 1, Youjia Feng 2, Liyi Yang 3


1 School of Physical Science and Technology, Southwest Jiaotong University, Chengdu, Sichuan, China
2 School of Resources and Environmental Sciences, Wuhan University, Wuhan, Hubei, China
3 School of Physics and Astronomy, Xihua Normal University, Nanchong, Sichuan, China

Corresponding Author

Yifei Zhang


Connect the two metal balls with a rubber band, then twist the rubber band and put the metal ball on the table. The ball will start to rotate in one direction and then in the other. This strange phenomenon is similar to the so-called "pendulum" movement. This paper makes a theoretical and experimental study of this phenomenon, and explores the relevant parameters that affect the motion, such as the type of rubber band, the material of the contact surface, and the size of the metal ball.


Twist the Rubber Band, Moment Balance, Pendulum movement


Yifei Zhang, Youjia Feng, Liyi Yang, The Ball on the Rubber Band. Journal of Engineering Mechanics and Machinery (2022) Vol. 7: 1-8. DOI:


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