How do shoelaces come untied?

Moment Of Um

Lemonada Media

Kids & Family, Education For Kids

4.4 • 1.5K Ratings

🗓️ 20 February 2024

⏱️ 5 minutes

🔗️ Recording | iTunes | RSS

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Summary

Have you ever been walking around when you notice that your shoelaces have come untied, even though you just tied them? What’s up with that? We asked engineer Christine Gregg to help us understand. Send us your questions for Moment of Um at BrainsOn.org/contact, and we’ll do all the footwork to find the answer. See omnystudio.com/listener for privacy information.

Transcript

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0:00.0	From the brains behind brains on, this is the moment of um.
0:07.3	Answering those questions that make you go.
0:10.3	Um, um, um, um, um.
0:13.6	Um.
0:13.6	Um.
0:14.8	Um.
0:15.8	Um.
0:16.8	Um.
0:17.0	Um.
0:18.0	Um.
0:19.0	Um.
0:19.0	Um.
0:20.0	Um. Um. Um. The moment of um comes to you from APM Studios.
0:27.5	I'm Mark Sanchez.
0:29.0	Do you remember when you first learn to tie your shoes?
0:31.7	Lots of us wear slip-ons or shoes with Velcro these days, so maybe you never even learned.
0:36.9	Don't worry, it's never too late.
0:38.9	But it can take a while to get the hang of it. Sometimes you might tie your laces too tight and make a
0:44.5	knot that's super hard to untangle, or sometimes you might leave them too loose, and they come untied.
0:50.5	It's so annoying to be walking along, happy as can be, and then, whoops, you trip on an untied shoelace.
0:57.0	Didn't I just tie that one five minutes ago?
1:00.4	One of our listeners wanted to know why this happens.
	...

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