When you use sidespin, the cue ball squirts in the opposite direction of the spin. The PDF proves that squirt is proportional to the of the cue and the endmass of the shaft. This is why low-deflection shafts exist; the PDF contains the finite element analysis proving they work.
The physics of pocket billiards is a demonstration of Newtonian mechanics in a low-friction environment. Mastery of the game requires an intuitive grasp of vector decomposition, angular momentum transfer, and frictional coefficients. While the player sees a game of shots, the physicist sees a system of differential equations governing the interaction of spheres and boundaries. the physics of pocket billiards pdf
In technical PDFs, spin is referred to as . By striking the cue ball away from its center, you introduce different physical effects: When you use sidespin, the cue ball squirts