Scientific Essay —— Why can three toothpicks lift a bottle of water?

I happened to see such a video when I was watching it the other day. A man took three toothpicks and a glass of water, and wanted to try it himself. Do as you say, prepare three toothpicks, then prepare a rope and a bottle of water. Can you fill the glass with water? ⊙! )

First, tie the rope to the cup; Then, put a toothpick on the table vertically, but half of it is on the table and the other half is not. Now hang the rope tied to the cup on the toothpick along the table (note, be sure to hold it well! ), then take a toothpick and put it vertically at the end of the toothpick (just a little forward). Finally, take the remaining toothpick and tie it horizontally on the rope with two tips. The second toothpick should be inserted in the middle of the third toothpick before you can let go. It worked, and it felt amazing!

I have one more question. Why? What is the principle?

Open Du Niang, search.

……

It turns out that its principle is the lever principle learned in science class last semester. Its experimental principle is: the rope squeezes the second toothpick to generate friction, and the more water bottles are hung, the greater the pressure and the greater the friction, which makes it difficult for the second toothpick to move and support the third toothpick; So three toothpicks can lift a bottle of water.

So how much can three toothpicks weigh? I took another bottle of water, and this time I'm going to hang two bottles of water and start the experiment. The steps are the same, but this time it's heavier. If I'm not careful, I'll break the toothpick. I must be more careful. Step one, step two, step three, step four and step five.

Three, two, one, let go. It worked! I didn't expect these three thin toothpicks to bear such a big weight. It's amazing.

Come and have a try!