Below is an exploration of the core physical concepts that govern every shot on the table. 1. The Geometry of the Collision
Physics reveals why "perfect" aim often misses. Two phenomena are usually responsible:
Striking the ball above center causes it to rotate forward faster than its travel speed. After hitting the object ball, this "over-spin" overcomes the 90-degree rule and pulls the cue ball forward. the physics of pocket billiards pdf
Striking below center creates backward rotation. Upon impact, the friction of the cloth "grabs" the backspinning ball, pulling it back toward the shooter.
Known as "English," sidespin doesn't change the path of the cue ball much until it hits a cushion. At that point, the rotation interacts with the rail, changing the angle of reflection (the Law of Reflection ). 4. Throw and Deflection: The Hidden Variables Below is an exploration of the core physical
Why do balls bounce the way they do? The measures how much kinetic energy is "lost" (converted to heat and sound) during a collision. Billiard balls are made of phenolic resin because it has a very high COR, meaning almost all energy is preserved, allowing for the long, multi-rail travel necessary for complex "leave" shots. Conclusion
When a sliding cue ball hits an object ball full-center, it transfers all its linear momentum to the object ball. The cue ball stops dead, and the object ball moves forward at the cue ball’s original speed. Two phenomena are usually responsible: Striking the ball
A billiard ball in motion possesses (movement across the table) and often angular momentum (rotation or spin).
