Sunken thimble. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Sunken thimble. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Stick a thimble into the millet, poured into a glass, with the hole up. Immerse it in the grits to the very edge of the hole. Take the glass in your right hand and tap the bottom of it against the palm of your left hand. Hits should be light and frequent. From the shaking, the static friction force between the grains of millet will greatly decrease, and the grains will become mobile.

sunken thimble

Millet from vibration becomes like a liquid, and the thimble first floats a little "(it's the same as if, having immersed an empty bucket in water to the very brim, we would then let it go - it will certainly rise slightly above the water). If you continue to lightly shake the glass, then the thimble , rising up, turn to one side, scoop up grits and gradually drown, just as a bucket would drown if filled with water.

Author: Rabiza F.V.

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