Why Do Your Shoelaces Come Untied?

Why Do Your Shoelaces Come Untied?

Physics (Video)

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UC Berkeley mechanical engineers have shown why your shoelaces keep coming untied. It’s a question that everyone asks themselves, often after stopping to retie their shoes, yet no one had investigated. The answer, the study suggests, is that a double whammy of stomping and whipping forces act like an invisible hand, loosening the knot and then tugging on the free ends of your laces until the whole thing unravels. Using a slow-motion camera and a ...Read More
UC Berkeley mechanical engineers have shown why your shoelaces keep coming untied. It’s a ...Read More