[OLPC-Games] Physics -- Newtonian mechanics.. for kids!

Joshua Minor j at lux.vu
Fri Jul 11 03:41:40 EDT 2008


As we discussed in the meeting, I added a wiki page discussing a file  
format for 2D physics scenes: http://wiki.laptop.org/go/Physics_File_Format
and a few topics for discussion here:
http://wiki.laptop.org/go/Talk:Physics_File_Format

-josh

On Jul 10, 2008, at 5:15 PM, Samuel Klein wrote:

> Brian, that was a great meeting; thanks for setting it up.
>
> I put some quick meeting notes here:
>   http://wiki.laptop.org/go/Physics_meetings/July_10%2C_2008
>
> And I wonder if there are existing physics-tool development lists  
> worth pinging for a future meeting.  They could provide their own  
> speed and compatibility tests... and I'd like to hear what people  
> like the linerider devs think about XO variants.  (that's much less  
> than full mechanics, but it does rely on a gravity engine and touch  
> on what's a good extensible interchange format for scene design)
>
> Cheers,
> SJ
>
> On Thu, Jul 10, 2008 at 7:58 PM, Edward Cherlin <echerlin at gmail.com>  
> wrote:
> On Thu, Jul 10, 2008 at 4:20 PM, Yoshiki Ohshima <yoshiki at vpri.org>  
> wrote:
> >> So we could simulate a pendulum or a Newton's cradle? How do you
> >> handle collisions?
> >
> >  A pendulum for sure, but my version of three pendulums putting
> > together doesn't show the expected behavior.  The elasticity isn't
> > right for it, it seems.
>
> What does it do? Can you get it to tell you what values of momentum
> and energy are passed through from balls 1-->2-->3?
>
> I once used a 5-ball Newton's cradle to do a rough simulation of
> particle-mediated forces.
>
> Have you tried two pendula hanging from a horizontal string? Do you
> get the expected transfer of energy back and forth?
>
> > -- Yoshiki
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> >
>
>
>
> --
> Edward Cherlin
> End Poverty at a Profit by teaching children business
> http://www.EarthTreasury.org/
> "The best way to predict the future is to invent it."--Alan Kay
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