RE: "particle" sliding along a curve

*To*: mathgroup at smc.vnet.net*Subject*: [mg70541] RE: [mg70516] "particle" sliding along a curve*From*: "David Annetts" <davidannetts at aapt.net.au>*Date*: Thu, 19 Oct 2006 03:22:03 -0400 (EDT)

Hi Mattiephly > Hi there. I'd like to create a Mathematica plot that > displays a "particle" -- which will just be a small, black > circle -- "sliding" > along a curve. That is, when I execute the Plot command, I'd > like to watch as the particle moves along the curve from one > point to another. > I've looked at the help documents for the built in Animation > abilities, but I'm not sure how to make use of them. Do I > really have to create a single plot for several positions of > the particle, and then animate those consecutively? > For example, I'd like my particle to slide along the parabola > y = x^2, and I'd like the particle to "slide" from x = -5 to > 5 (though maybe show the curve from x = -10 to 10). And I'd > like to be able to control the "speed" of the particle, too. Both Dave Park & Helen Read have published some excellent examples of this sort of thing. Have a look at Elastic Collision Animation at http://home.earthlink.net/~djmp/Mathematica.html on Dave Park's site or search for Helen Read's posting of an animated Ferris wheel on Mathgroup. Regards, Dave.