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Dancing egg. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

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If you have a tray with a perfectly smooth bottom, you can make this an interesting experience. Turn the tray over and place a hard-boiled egg on its bottom. Drive the tray in a circle, speeding up and speeding up the rotation. An egg lying in the middle of the bottom will be carried away by this movement and will begin to rotate around its own axis faster and faster. Little by little it will rise and stop at one end, spinning like a top.

Dancing egg

In order to better succeed in this experiment, the egg must be boiled with cunning. It should not lie in the pan, but stand upright in it. This can be achieved, for example, by putting a wire spiral on the egg, expanding downwards. The fact is that under the shell at the blunt end the egg has an air chamber. When cooking in a vertical position, this chamber will be located exactly along the axis of the egg, so that during the experiment it will be easier to achieve balance.

If you still can't get the egg to dance across the tray, here's a trick to make the experience easier. Lay the tray on the table so that the edge protrudes and can be picked up immediately. Place the egg in the middle, holding it with the thumb of the left hand and the index finger of the right. With a quick movement of your hands, make the egg rotate. Then pick up the tray and keep the egg spinning with gentle pushes.

Author: Galpershtein L.Ya.

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