On Sat, Jul 12, 2008 at 4:21 PM, Yoshiki Ohshima <[EMAIL PROTECTED]> wrote: > At Thu, 10 Jul 2008 16:58:32 -0700, > Edward Cherlin wrote: >> >> On Thu, Jul 10, 2008 at 4:20 PM, Yoshiki Ohshima <[EMAIL PROTECTED]> 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? > > Heh, of course you can try by yourself. But if you put a circle on > the floor (stand still), and make another hit from the side, the > momentum is shared by these two circles and both of them move together > at the same speed. > >> Have you tried two pendula hanging from a horizontal string? Do you >> get the expected transfer of energy back and forth? > > Yes, but no. I'm not sure what you mean by a horizontal string, but > the string I made is not flexible enough to make it happen. > > Speaking of examples, the screenshots at > http://wiki.laptop.org/go/Physics_(activity) aren't exactly something > I found "physics-y"; these are more like story telling in picture > books. I made some examples (two pendula and a mesh, I did an arch > but it is gone). These might catch more attention from teachers and > educators.
Yoshiki, This gave me an idea... Just after adding motors to the most recent version of Physics (too fun), I took a BULB-exposure shot of Physics in motion on my camera. Here is the result: http://wiki.laptop.org/go/Image:Housegolf.jpg Neat! Thanks, Brian > > -- Yoshiki > > _______________________________________________ > Sugar mailing list > [EMAIL PROTECTED] > http://lists.laptop.org/listinfo/sugar > > _______________________________________________ Library mailing list [email protected] http://lists.laptop.org/listinfo/library
