Experiments with a gyroscope. Entertaining physical experiments at home

ENTERTAINING EXPERIENCES AT HOME
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Experiments with a gyroscope. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Very interesting experiments can be done if you manage to find a heavy metal top mounted in a metal ring in a toy store. This toy is called a gyroscope (or gyroscope).

The top is launched by a thin and durable cord. When rotated rapidly, it maintains a vertical position when placed on one of the balls of the ring. The top not only does not fall, it even resists when someone tries to knock it down. And only when the rotation slows down does the top gradually lie on its side.

Experiments with a gyroscope

However, you are already familiar with all this from experiments with simple homemade tops. But an improved commercial top also provides new opportunities.

For example, it moves without falling along the bottom of a plate or other smooth surface if you press its bottom ball with a stick.

You can give the top a position that seems to contradict all the laws of balance. It will rotate while standing at an angle on the tip of the needle. To do this, insert a sewing or gramophone needle into the cork of the bottle with the tip up and, having twisted the top, place it carefully and precisely on the tip. It’s good if there is a small indentation on the top ball. It will not let you jump off the needle. If the top is tilted slightly, instead of falling, it will describe a circle with its free end.

But you already know that the balance of a top is unstable. In fact, if you tilt it, the center of gravity will lower. This means the top must fall. And it will actually fall as soon as it stops rotating. But while it’s spinning, it’s standing. The axis of rotation maintains its position.

A spinning top can, like a rope dancer, be held on a thin thread. To do this, you only need to have a groove in one of the balls of a purchased top. If you don’t have one, you can carefully make it yourself with a thin file. Tie a thread to the handle of a window, door, hanger or other stationary object, and take the other end in your hand. Having untwisted the top, place it with a groove on the thread. It will stand still or “move” from one end to the other if you raise or lower the thread. A well-spun top can walk across the entire room!

Here’s another wonderful experience with a store-bought top. Hang the top by one of the balls on a strong thread. As long as the top does not rotate, it will, of course, hang vertically. But as soon as you launch the top, it will be able to spin in the position that you give it. At least sideways!

Author: Galpershtein L.Ya.

We recommend interesting experiments in physics:

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