Why can a seemingly fragile straw penetrate a whole potato?

It's a physical problem, with the help of the force of air, which is actually the force of air that pierces the potatoes.

As I said upstairs, you have to seal the other end of the straw, and the volume of air in the straw decreases the moment you insert it into the potato, assuming that the force is the same, and the only outlet for the air in the straw is the end of the potato.

According to the physical formula p=f s (in order, pressure force, force area), the volume of air inside the straw decreases, and the pressure on the surrounding area (force per unit area) increases.

But this force is not strong enough to break through your fingers and the surrounding straw walls, and can only be rushed out of the relatively weak potatoes (1Force Balance 2Tissue structure of the straw.

It's tighter than a potato, you can chew the potato, but you can't chew the straw) It's not hard to push it out, and when you go through the potato, there must be a piece of mashed potatoes in the straw, but not on the end of the finger.

Here's an example: every home now has a pressure cooker.

When you use a pressure cooker to cook a meal, but you don't let go of the gas inside, and you just open the lid of the pot, what happens when you open the lid? Hit the ceiling.

Dropped...

The thicker the straw, the easier it is to penetrate, which is related to the straw.

This is because the straw tip is pointed, which makes it easy to break through the potato.

Potatoes are made of starch and are not too their own.

Because the straw tip is relatively sharp, the force area is small. Larger work can be done with less force.

As long as the straw is sharp enough and the force is strong enough, the potato can be penetrated.

It depends on whether your strength will turn or not, and if it only goes in one direction, it will penetrate.

Potatoes are not really hard and can be penetrated.

The front of the straw is sharp, the thickness is small, and it is easy to pass through.

While the potatoes are not paying attention, it will pass in a flash.

Potatoes are not hard objects on their own, and they are easy to pass through.

Yes......No, it doesn't matter......No, it's all for yourself.

It is simply impossible for a straw to penetrate the potato. But when she conducted an experiment with her "unforgiving" son, the mother was surprised by the results.

Giving you a straw, a regular straw for drinking milk, and a potato that you just bought from the vegetable market, excuse me, can you use a straw to cross the potato? No, it seems like a reasonable answer. What if you are given another auxiliary tool, the cup?

You'll think it's hard to do. But the process and the results of the experiment turned out to be the opposite of what we expected: first put the potatoes on the cup, then grasp the straw with the four fingers of the right hand, then use the thumb to grasp the top of the straw, and finally plunge it downward, and the miracle happened—the straw penetrated the potato!

The key to this experiment was to use your thumb to snap on the tip of the straw, so that the straw, which was blocked from air flow, became incredibly hard enough to penetrate the potato.