What does a tumbler do? What is the principle?

The way to become a tumbler is as follows:

1. Preparation materials: double-sided tape/eggshell/plasticine/glue/scissors/marker/compass/cardboard.

2. Draw a sector on the cardboard with a compass and cut it out.

3. Roll into a cone and fix it with double-sided tape.

4. Put plasticine in the eggshell.

5. Connect the cone with the eggshell.

6. Put the tumbler on a smooth table and try to push it. The tumbler will stand up automatically again, and the tumbler will be ready.

The principle of the tumbler is as follows:

The lower the center of gravity of an object, the more stable it is. When the tumbler stands upright, the center of gravity is the lowest. When we push it, the tumbler deviates from the balance position and the center of gravity rises. For stability, the center of gravity always returns to the lowest position (that is, the upright state), so the tumbler will not fall down no matter how he swings.

From the lever principle, after the tumbler leans, the line of action of gravity deviates from the fulcrum, which makes gravity produce a moment on the fulcrum, that is, the resistance distance. Because at this moment, the tumbler will return to its original state. With the increasing tilt angle of the tumbler, the offset of the line of gravity action increases, and the resistance moment also increases, finally achieving the balance with the external force moment. This is how the tumbler's ability to resist external interference and maintain balance is formed.