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Do you want to test your knowledge of Newtonian physics?

 
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TheCupboard
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Joined: 25 Feb 2007
Location: USA

PostPosted: Tue Mar 11, 2014 1:11 pm    Post subject: Do you want to test your knowledge of Newtonian physics? Reply with quote

http://www.youtube.com/watch?v=DDSRsMGbNV8

According to the New York Times Science section, "a key to understanding the phenomenon, [said Dr. John Biggins, a Cambridge physicist] is that mathematically, a chain can be thought of as a series of connected rods. When you pick up one end of a rod, two things happen. One end goes up and the other goes down, or tries to. But if the downward force is stopped by the pile of chain beneath there is a kind of kickback, and the rod, or link, is pushed upward. That is what makes the chain rise..."

He continues, "'Finding a new physics problem in an Internet video was,' Dr. Biggins said, 'something of a treat. For a scientist it's "really reassuring" that new problems like this can pop up,' he said."

In other news, physics, (along with Newton's 3rd Law) how do they work?
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Doomination
God like!


Joined: 23 Oct 2006
Location: It's NOT lupus. Posts: 6.022 x 10^23

PostPosted: Tue Mar 11, 2014 7:56 pm    Post subject: Reply with quote

dat energy conversion tho
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TheCupboard
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Joined: 25 Feb 2007
Location: USA

PostPosted: Tue Mar 11, 2014 9:06 pm    Post subject: Reply with quote

It really surprises me how few beads can be left in the jar yet the arc and acceleration of the bead string continues to astonish. I think I understand the concepts but then I watch it again and become confused. Wink

Last edited by TheCupboard on Wed Mar 26, 2014 4:25 am; edited 1 time in total
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Ronald
Rontard


Joined: 17 Aug 2005
Location: Netherlands Clan: [QnB]

PostPosted: Tue Mar 11, 2014 9:22 pm    Post subject: Reply with quote

I believe this is happening thanks to gravity? I believe weight is also a big factor here.
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DoomKid
Unstoppable!


Joined: 09 May 2008
Location: Aussie Land

PostPosted: Sat Mar 15, 2014 12:02 am    Post subject: Reply with quote

This is crazy, does it by chance also have something to do with how far the bead falls until this 'chain reaction' starts? No pun intended..
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