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»» forums  subject: Pandoras Box 24 replies on 2 pages. most recent reply: Sun, Aug 26 1:19 PM by webjunkie411

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webjunkie411 »» models Pandoras Box   posted: 14-Jul-07 00:46   »»  ive been wondering ever since i saw the original pandoras box... what can you do with something lke that, i made a differet version of itbut its not anything to impressive http://sodaplay.com/constructor/beta/applet.htm?&getmodel=webjunkie411+pandoras_box_2

cactus2 »» models Re: Pandoras Box   posted: 14-Jul-07 01:10   »»  That's not a pandora's box. It doesn't have the same attributes as the real thing,

bram12 »» models Re: Pandoras Box   posted: 17-Jul-07 17:14   »»  this is a box of pandora and my first xml eddited model http://www.sodaplay.com/constructor/beta/applet.htm?&getmodel=bram12+box.xml

bram12 »» models Re: Pandoras Box   posted: 17-Jul-07 17:15   »»  wrong link srry for double posting http://www.sodaplay.com/constructor/beta/applet.htm?&getmodel=bram12+box_xml

jackman6 »» models Re: Pandoras Box   posted: 17-Jul-07 22:59   »»  it works because the springs that make the box are zip springs. since they all have lengths of 0, they resist the same no matter how much there stretched. the 2 cross bars make it keep a rectangular shape

cactus2 »» models Re: Pandoras Box   posted: 18-Jul-07 01:20   »»  No, the force is still proportional to the stretching, which is the length of the spring. The various forces cancel out, leading to the phenemon.

webjunkie411 »» models Re: Pandoras Box   posted: 18-Jul-07 14:54   »»  i no how it works but what i want to know is if there are any models that do somehting with it im sure there are

the_duck »» models Re: Pandoras Box   posted: 25-Jul-07 02:18   »»  http://www.sodaplay.com/constructor/beta/applet.htm?&getmodel=the_duck+Pandoras_Icecream http://www.sodaplay.com/constructor/beta/applet.htm?&getmodel=the_duck+Pandoras_Boots http://www.sodaplay.com/constructor/beta/applet.htm?&getmodel=the_duck+Pandoras_Dancers http://www.sodaplay.com/constructor/beta/applet.htm?&getmodel=the_duck+Inertial_2pt_CR http://www.sodaplay.com/constructor/beta/applet.htm?&getmodel=the_duck+Whirl_Walker

RJRocket53 »» models »» homepage Re: Pandoras Box   posted: 25-Jul-07 19:28   »»  the longer the spring, the more resistance it gives off, but when you multiply a zip spring's length by any number, it's still 0 so the stiffness doesn't change, jackman was right. Sorry Cactus.

cactus2 »» models Re: Pandoras Box   posted: 26-Jul-07 14:28   »»  No, the spring's actual length has a part in the formula as well. Otherwise, how would you explain zip spring's behavior of inward force in tension springs?

RJRocket53 »» models »» homepage Re: Pandoras Box   posted: 26-Jul-07 15:27   »»  what do you mean "inward force of tension springs" that one mass doesn't move and the other one does?

cactus2 »» models Re: Pandoras Box   posted: 26-Jul-07 15:57   »»  Well, zip springs have an inward force in general.

RJRocket53 »» models »» homepage Re: Pandoras Box   posted: 26-Jul-07 15:58   »»  but it is consistent no matter how much they are stretched

cactus2 »» models Re: Pandoras Box   posted: 26-Jul-07 18:30   »»  The Hooke's law is k(x-r) where x is the amount of stretching and r is the rest length. When the spring is a zip spring, r=0 and the expression is simplified to kx. It still exerts a force linear to the amount of stretching, not a constant force.

mmaarrkkuuss »» models »» homepage Re: Pandoras Box   posted: 27-Jul-07 20:06   »»  Here's proof: http://www.sodaplay.com/constructor/beta/applet.htm?&getmodel=mmaarrkkuuss+Proof They're made using the same guideline. The one with only one mid-point is also stiffer. :) mmaarrkkuuss

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