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Fun With Chained Metal Beads

Hits: 6001 | Rating: (2.9) | Category: Science | Added by: Squrlz4Sale
Jump to: Bottom    Last Post
5Cats
Male, 50-59, Canada
 24427 Posts
Sunday, June 30, 2013 6:36:55 PM
The rope would need to be really long, 100 feet or more, just to get it going & have enough time to see it happen.
The drop would need to be long too, and the flexibility of the rope is important: to floppy and it won't work, too stiff and it won't fall properly.

My Mum moved to a 4th floor apartment with a balcony, I'll give it a try with the longest rope I can find and report back!

carmium
Female, 50-59, Canada
 6376 Posts
Saturday, June 29, 2013 5:11:50 PM
Squrlz: I think you'd have to weight the end of the rope to get it to pull hard enough, so you'd have to be a few floors in the air. But otherwise, sure, let's see a test. Anyone?

Squrlz4Sale
Male, 40-49, Eastern US
 6018 Posts
Saturday, June 29, 2013 2:58:26 PM
There remain a lot of unanswered questions here. For example, could you get a rope to do the same thing? How about a heavy rope? Does it *have* to be a beaded chain? If so, why?

(Carmium, I think you hit on some key points. I'd just like to see this tried with a rope.)

ferdyfred
Male, 40-49, Europe
 10184 Posts
Saturday, June 29, 2013 1:30:22 PM
now a religious sort would make a psalm of this
But its all physics

drawman61
Male, 50-59, Europe
 5466 Posts
Saturday, June 29, 2013 2:48:44 AM
What if he stood on a ladder...in a really deep hole. That would confuse it.

Tiredofnicks
Male, 30-39, Europe
 4745 Posts
Saturday, June 29, 2013 2:48:00 AM
I've seen ropes do the same but for once I haven't even got a theory.

drawman61
Male, 50-59, Europe
 5466 Posts
Saturday, June 29, 2013 2:47:22 AM
Maybe if he stood on the empire state building it would reach the moon.

Nickel2
Male, 50-59, Europe
 4415 Posts
Saturday, June 29, 2013 12:42:43 AM
@Carmium: My conclusion exactly.

PinkRhoid
Male, 18-29, Eastern US
 1205 Posts
Friday, June 28, 2013 11:05:35 PM
It's the same as a siphon from a water source high in elevation from the destination. If each bead is one gallon of water and we yank the tip out to the floor 50 gallons of pressure is pulling from the top when the end finally hits the floor. This momentum is kept up until the end. Not much different than water really.

Squrlz4Sale
Male, 40-49, Eastern US
 6018 Posts
Friday, June 28, 2013 8:41:26 PM
@ Carmium: Ooo, Carmium, I'm impressed! I like your reasoning.

carmium
Female, 50-59, Canada
 6376 Posts
Friday, June 28, 2013 8:28:20 PM
I suggest the following:
Bead chains have a certain limit to their flex; they are made of little barbells with their ends trapped in little balls and can only bend so far before breaking as it is. If a chain is pulled on at one end, that stiffness increases, and the chain must form an arc to leave the beaker.
Anchor chains on a ship have more loosely attached links and don't usually display this kind of behaviour when the anchor is dropped.

sbsherz80
Female, 30-39, Western US
 80 Posts
Friday, June 28, 2013 7:29:36 PM
I think the music was well placed in this case

bacon_pie
Male, 30-39, Southern US
 2819 Posts
Friday, June 28, 2013 6:35:53 PM
I thought "Fun With Chained Metal Beads" was going to be something completely different.

5Cats
Male, 50-59, Canada
 24427 Posts
Friday, June 28, 2013 6:15:44 PM
@5Cats: "Quite simple really! I don't want to spoil the fun by explaining it..."

@Squrlz4: "You have no idea, do you!"

@5Cats: :blush: "Nope, not a clue..."

(Really though, his explanation works just fine. I'd like to see them stand on a ladder and do that! Physics is fun!)

Squrlz4Sale
Male, 40-49, Eastern US
 6018 Posts
Friday, June 28, 2013 5:55:38 PM
Link: Fun With Chained Metal Beads [Rate Link] - A chain of metal beads exhibits some surprising behaviors.


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