An upright broom has nothing to do with gravity? What is the truth about the broom standing upright?

Recently, I let the broom stand up and spread it around us. I believe that someone in your circle of friends or space must be drying photos of themselves standing. Some people say that this is because the gravity of the earth is the smallest, so the broom stands up. However, many people question that the upright broom has nothing to do with gravity. In this case, what is the truth of the upright broom? Next, let's take a look!

It has nothing to do with gravity.

Many experts from Peking University College of Earth and Space Sciences and Astronomy Department of Beijing Normal University. They all say it has nothing to do with gravity. In fact, the gravity of the earth has not changed obviously at present, and it is even more impossible to make the broom stand upright at a certain moment.

Small physical experiment

In fact, this is just a small physical experiment to find the center of gravity of an object. We carefully put the broom horizontally and vertically, and patiently search to find its center of gravity, which is usually located at the bottom of the broom. In addition, if the broom is new, the broom hair is straight and hard, the contact area with the ground will be larger, and it is easier to find the center of gravity and fulcrum of the broom. So the so-called broom challenge is actually just a test of your ability and patience to find the center of gravity.

scientific explanation

Yang Feng, founder of Tianyi Research Institute, explained: First of all, if anything wants to stand, it must keep its center of gravity above the supporting surface. The supporting surface of the broom looks small, but it is actually quite large when standing, and it is actually easier to swing because of the large friction under it. Second, the broom has a lighter rod, a heavier head and a lower center of gravity. Therefore, the center of gravity of the broom is low, and it is easy to stand above the contact surface. ?

Finally, the broom can actually stand up every day if you want. You can also try it now to see if the broom can stand upright when the gravity of the earth is not the minimum ~