Flat tape and tissue tape, which is more slippery?

On the floor, it is really easy to slip on the floor. Perhaps on the tape is the same, which means that the flat tape has to be smoother than the convex, protruding bandage. But in fact contrary to the prediction.

The smaller the weight on an area, the stronger the pressure it causes
(Photo:: mwvphotography)

If you have the opportunity to pull a heavy sled rider over the bumpy surface, you will see the car lighter on a flat ice. The face of the ice is smoother than the flat ice! This is explained as follows: The smoothness of the tape does not depend on the flatness, but entirely on a different cause. That is the melting point of the ice decreases as the pressure increases.

Let's analyze what happens when skating on skates or sleds. Standing on skates, we lean on a very small area, totaling only a few square millimeters. The whole body weight compresses on that small area, creating a huge force. Under high pressure, the ice melts at low temperatures. At that time, there was a thin layer of water between the shoe soles and the ice. So the skater can go.

And when his feet moved to another place, there was a phenomenon like that right there, which meant that the bandages at his feet turned into a thin layer of water. Of all things that exist in nature, ice alone has that nature. A Soviet physicist called it "the only slippery thing in nature". Other objects are flat but not smooth.

Now, we come back to the problem of flat tape and tissue tape, which is more slippery . In theory, the smaller the weight on the area is, the stronger the pressure it causes. So, will skaters act on the base like a larger pressure when standing on flat tape or when standing on tissue bumps? Obviously when standing on the bumpy tissue. Because here, they only overlap on a very small area of ​​the raised or protruding surface of the ice. The larger the pressure on the ice, the faster the ice melts, and therefore the tape becomes more smooth (if the sole is wide enough).

If the base is narrow, the above explanations are not appropriate. Because in that case, the base would dig into the protruding bumps, and at this moment, the energy of motion had been consumed by the tape.