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The unofficial soundtrack of each and every basketball, squash or hard-court tennis fit is the consistent high-pitched squeak or shreak of the gamers’ footwear. However can this squeak be designed out of them whilst conserving the grip?
That’s the query a global staff of engineers and carried out physicists, together with me, had been investigating. It feels like a small design tweak. Actually, it cuts to a deep physics drawback: how a smooth frame slides towards a inflexible one.
Most likely strangely, the mechanism that produces sound when a smooth cast slides towards a stiffer one has lengthy been the topic of clinical debate. Maximum theories are connected to the concept that of “stick-slip”: when, as an alternative of sliding easily, the sliding object hastily alternates between sticking and slipping.
Whilst it sticks, the smooth frame (similar to a rubber sole) deforms and retail outlets elastic power. Then it all at once slips, turning a lot of that power into warmth via friction – whilst additionally freeing speedy vibrations that radiate out as sound.
However this isn’t precisely what we noticed in our experiments.
After Leonardo da Vinci
Our lately printed find out about took inspiration from the simple-but-effective setup utilized by Leonardo da Vinci in his research of friction from the past due fifteenth century.
Leonardo da Vinci’s sketches of his pioneering friction experiments.
Codex Arundel, British…
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Author : bq3anews
Publish date : 2026-03-06 05:35:00
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