부력 가상실험

You can experiment with the size of buoyancy by using floating objects.

The magnitude of the buoyancy is proportional to the volume of the submerged object.

And when gravity (weight) is larger than buoyancy, it sinks, and when it is small, it floats.

One of the most common problems students face is the relationship between the gravity and buoyancy of a floating object.

Most floating objects say that they have more buoyancy than gravity.

The correct answer is that buoyancy and gravity are the same size. When you put an object into the water by force, the volume that is submerged in water becomes bigger and the buoyancy becomes bigger. I think that the object floating in the water is also more buoyant.

When you push the object by force and push it into the water, the buoyancy is bigger than the gravity.

When an object floats above the surface of the water, the submerged volume gradually decreases, so buoyancy becomes smaller, and the moment when it becomes equal to buoyancy and gravity stops rising.

Conversely, when you lift an object over the water, the gravity becomes larger than the buoyancy, and when you release the object, it sinks into the water until the gravity and buoyancy become the same.

I tried to explain it in words, so I created a virtual experiment program.

You can explain the size of the buoyancy by dragging the object with your mouse and dragging it into or out of the water.

In the case of metal, it was possible to change the buoyancy by changing the shape.

It also made it possible to explain that the size of the buoyancy is changed by changing the type of liquid. (Explanation of why people are floating in the Dead Sea)

I think I have a lot of shortcomings when I make it hastily. But I just want to know if there is someone I need.

* One more thing: you can right-click to enlarge or reduce part of the screen. Sometimes it is better to zoom in and out of a floating object.

* Added: I showed an experiment of matching buoyancy and gravity using a balloon with a line and added it to the program in a hurry.

When you hang a line on a balloon, the balloon keeps moving up and stops at where the gravity and buoyancy match. The reason that gravity is getting bigger as you go up is because there are more and more lines that the balloon has to pull up.

By adjusting the size of the balloon, buoyancy can be adjusted and added.