Abstract: The final resting state of a falling object depends on the geometric characteristics, motion state, material properties, etc. Based on the dynamic model, this paper explores the influence of the initial velocity, angular velocity, height, mass and recovery coefficient of cylindrical dice on the final face orientation of the dice after landing, and discusses the geometric characteristics and physical conditions that should be presented to make the final orientation probability of each side of the cylinder dice equal. The results of this paper can provide ideas and reference for such research.

Key words: cylinder dice, dynamics, probability