On the retrograde motion of a rolling disk
a Moscow Institute of Physics and Technology (State University), Institutskii per. 9, Dolgoprudnyi, Moscow Region, 141700, Russian Federation
b Institute of Computer Science, ul. Universitetskaya 1, Izhevsk, 426034, Russian Federation
c Udmurt State University, ul. Universitetskaya 1, Izhevsk, 426034, Russian Federation
d Izhevsk State Technical University, Studencheskaya st. 7, Izhevsk, 426069, Russian Federaion
This paper presents theoretical and experimental research explaining the retrograde final-stage rolling of a disk under certain relations between its mass and geometric parameters. Modifying the no-slip model of a rolling disk by including viscous rolling friction provides a qualitative explanation for the disk's retrograde motion. At the same time, the simple experiments described in the paper fully compromise the drag moment as a key reason for the retrograde motion considered, thus disproving some recent hypotheses.