Jumping ring. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Jumping ring. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

A funny toy is often sold in stores - a jumping grasshopper. The body of a small jumper is made of green plastic, on the abdomen there is a round rubber suction cup. And the long legs are bent from elastic steel wire.

jump ring

A toy grasshopper is placed on the bottom of the plate and pressed on it from above. Steel legs bend, move around on a plate, and the grasshopper presses its abdomen against a smooth surface. In this case, the suction cup is sucked.

Now you can let go of the grasshopper. It remains in the same position sometimes for several minutes. But gradually air penetrates under the suction cup, it keeps getting weaker... Fuck! With a loud click, the grasshopper breaks away from the plate and jumps a good meter, or even higher! A nervous person will shudder in order, especially if he has already managed to forget about the grasshopper and is distracted by something.

Why is the toy grasshopper jumping anyway? Yes, because his legs are straightened. You bent them, and the suction cup held them in a curved position. The legs tend to straighten up, straighten out. And as soon as the sucker lets go, they immediately straighten out. Click! The grasshopper takes off into the air.

A similar experiment can be done with a rubber ring cut from a bicycle or car inner tube. Sometimes such rings can be found ready-made; they are put on special "fastened" bottle caps. The outer diameter of the ring is 20 mm, the diameter of the hole is 8 mm.

jump ring

Twist the ring, inserting part of its circumference through the hole in the middle, and put it on the table. After a few seconds, the ring will straighten up, so abruptly that it jumps 20-30 cm up. The reason here is the same as in the experiment with the toy grasshopper. Rubber - compressed, bent, twisted - tends to regain its shape. It gradually "gets out" from the middle of the ring and finally straightens. Rubber, like steel, has the ability to recover its shape. This property is called elasticity.

Author: Galpershtein L.Ya.

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