A lot of people play billiards only with technical exercises. Few people know that the movement of billiards is linked to the physical knowledge after being hit. In fact, the movement of all the billiards that are hit conforms to the law of conservation of momentum. In fact, the billiard lever in our hands is like a link between the technology and knowledge of the billiards. To improve the billiard technology, we need to balance the lever, so the knowledge of physics is to be popularized and help you to have better attainments in billiards.
First, take the linear ball, when the target is hit, then the ball passes all of its momentum to the target ball. If the ball does not rotate, it is a fixed pole and stops in place. Some friends found that when the ball was in the middle of the ball, the target ball continued to go on, because of the tribological effect of the table, which gave the ball a forward rotation. So we can get experience through the tribological effect of the table, the ball in a little distance, we have to choose the rod, and we need to aim at the next point in the ball to counteract the friction.
If the rotation of the rod is less, the displacements are relatively small regardless of the ball forward or after the ball, so to make the ball go faster, it is necessary to strengthen the rotation, whether it is a high pole or a low pole. Stun is to allow the rotation of the ball less, the middle high bar stun, the middle low pole stun, the middle pole stun, all belong to stun.
The angle of the target ball, in fact, also conforms to the law of conservation of momentum, the momentum of the ball into the 2 direction of the vector, the 2 direction of the vector and equal to the original momentum of the ball. For example, when the ball is thin, the momentum of the target ball is very little, and the momentum of the ball is basically the same, so the speed of the ball is almost not reduced.
When the ball is in the arc, it is the synthesis of two forces. One is the separation of momentum, the other is the force generated by the rotation of the ball. At first, the momentum of separation and intersection is very large, and the force of rotation is small. Therefore, first offset, then the force of rotation will come out, and the direction will be changed.
In other words, we often need to play a small rod, a low bar, but the aim is to make the force of the separation angle smaller and the force of rotation larger. This is the pure low bar, I hope you can experience it well.