Why does short track speed skating touch the ice?

Short track speed skating is a sport different from other short track speed skating events in personal speed skating and tactical ability. Short track speed skating needs a high-quality helmet. Helmets must conform to ASTM standards and have a regular shape. Helmets are usually made of lightweight carbon fiber materials. When the head collides, the helmet will automatically absorb the impact force and reduce the impact force on the athlete's head.

If an object wants to move relative to the ground, it needs to overcome friction. The speed of short track speed skating is faster, and the inclination of curve is larger. If you only rely on your body and legs, it is not good to lean at a large angle. Will be thrown out because of excessive centrifugal force. In order to keep the center of gravity and body balance better, athletes will encounter ice when turning. The friction is so great that the object may not move.

The friction on the surface of glass or steel plate is too great to slide on these surfaces. When scientists observe the ice surface from a microscopic point of view, they find that there is a transition layer at the top of the ice surface, and the material state below the transition layer is pure crystalline ice. From the bottom to the top, the transition layer is crystalline ice, a mixture of ice and water and an ice film. The ice film contains tiny ice cubes and ice particles, which are movable? Water molecules? , can also be understood as? Active ice? . Can they play? Rolling log? They slide into a rolling state, which greatly reduces the friction during skating.

When skating, due to the pressure of the skateboard on the transition layer, more liquid water will appear in the transition layer, which plays a role in lubrication and reducing friction. Under this dual action, the skater does not need to touch the crystalline ice under the transition layer, but only needs to slide in the transition layer, and the friction is very small. Short track speed skating is also an antagonistic sport. In the process of sports, athletes may knock down their opponents for various reasons, and the skates are very sharp. The top speed is 50 kilometers per hour, and they may cut down their opponents.