What happens when you whip a large chain

Originally published at: https://boingboing.net/2020/08/27/what-happens-when-you-whip-a-l.html

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That looks like a chain made specifically to do that.

Adam Savage is going to be all over this!

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Video link for the BBS

https://www.youtube.com/watch?v=fYPqs69_5g4

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So is the snap at the end really the whip hitting mach speed? I could look it up but I would rather hear what all y’all have to say.

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This is a pretty comprehensive explanation…

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I don’t want science! I want people arguing like they used to in bars!

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Arguing in bars with whips?

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Man. I went to the wrong bars! Best I ever saw was pool sticks!

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Oh hell yeah!

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Sticks and stones may break my bones,
But whips and chains act in accordance to the laws of physics.

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Wtf, i did not expect that. Chain appeared to be moving slowly and thought the whole thing was an amusing joke. And then the chain actually cracked and i was shocked 0:

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b060c88d-39a4-4657-85db-fa35060f18ea_1.04f1f86f60753fe63927e8614d17ecee

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wow. thats truly impressive; this guy must have read seveneves, he really knows his knickstelle

great video, thank you! (man, and april choi is just so awesome in every possible way!)

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It appears that each link in this chain is slightly smaller than the last, so that the effort that the whipper puts in at the large end is magnified as the wave moves down the chain to the fine tip. Each link being lighter means that less energy is required to move it, so that more of the energy can move down to the next link of the chain.

This is a non-researched guess, so if I got the science wrong, feel free to rip me a new one (theoretically speaking).

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My girlfriend and I once stayed in the Puszta in Hungary. The place had a hotel and a bar and nothing else. The hotel wasn’t serving food, so we went to the bar for a dinner of peanuts and beer. We sat at the nice big table just outside the door. Then the local arrived. We had apparently sat at the wrong table. Nobody complained, but we were given a ‘special’ demonstration of their skills with a bullwhip. We sat, trying to hold a normal conversation, with the tip of a 5 or 6m whip flying past close enough we could feel the ‘breeze’. It was an odd evening. (But/And a fantastic country - I recommend it!).

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Chain physics discussed in last 1/3 of SEVENEVES by Neal Stephenson. Recommended. https://www.goodreads.com/book/show/22816087-seveneves

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reactorama

Except for the creeping fascism of course.

I was supposed to be in Hungary for a conference right now. It’s all online now but that’s no substitute.

Yeah, good point. It’s getting harder to avoid creeping fascism these days. How sad :frowning:

(Online conferences suck, but I think they’re here to stay. Can we really justify jetting around the world for a one-week jolly while the world melts and burns around us?)

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