Three experiments with coins. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Three experiments with coins. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

A beautiful experience can be done with a heavy coin, preferably with a metal ruble. Place a strip of smooth paper with one end on the edge of a flat table. On this strip, put a ruble coin on the edge.

Now, holding the free end of the strip with your left hand, sharply hit it with the finger of your right hand. The paper will slide off the table, but the ruble will remain in place!

Three experiments with coins

The experiment with a coin can be done in a slightly different way. Place a ruble edge-on on a postcard so that about two-thirds of the postcard protrudes beyond the edge of the table. Of course, as in the previous experiment, this place on the table should not be covered with a tablecloth.

Three experiments with coins

Then, with a ruler or some kind of stick, hit the protruding end of the card. This experience is more difficult than the previous one, here you have to work out. But you will definitely learn how to hit so fast and so hard that the card will fly out, and the coin will not even budge!

Three experiments with coins

Another experiment, more difficult, also with a coin. Raise the index finger of your left hand and place the square cut out of the postcard on it. And put a heavy coin on top. If you give the square a sharp click, you will knock it out, and the coin will remain on your finger!

What is the secret of all these experiments? And coins, and checkers, and a chessboard in the story I told - they were all in place, did not move. If they had not been touched, they would, of course, always have remained in the same position.

Then we set in motion a tablecloth, a piece of paper, a lower checker in a column. It would seem that this movement should be transferred to coins, chess, checkers. But if objects easily slide one over another, and the movement is sharp enough, it does not have time to be transmitted. Top items stay in place!

Here the common property of all objects, or bodies, as physicists say, is manifested. Every body strives to maintain a state of rest. This property of bodies is called inertia.

Author: Galpershtein L.Ya.

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