[quote author=aidooon link=topic=824.msg7381#msg7381 date=1286661219]
hello ppl. .
i am working on a simulation for this newton's cradle. .
i want to make the simulation myself
but i like to get use of this cute simulation in here. .
so may u please put here a full physical study for newton's cradle. . so that i can start working on the simulation. .
thanx alot . .
[/quote]
http://www.phy.ntnu.edu.tw/ntnujava/ntnujavazip.php?ejsuserjar=3114
Download the jar
Unzipped it
Inside the folders there should be the java file.
Can find?

I think you should be able to figure out the equations from the open sourced xml or java, do your own homework  ;)

In a Newton's Cradle , hard steel spheres hang at rest side by side. If one or more of the spheres is displaced and released , near elastic collisions ensue. http://www.egglescliffe.org.uk/physics/physicists/newton/nlaws/collision.html

Collision  Analysis
Assumptions:
   * Spheres are perfectly smooth
   * Collisions are head on.
   * Energy is purely translational and not rotational or vibrational
   *[s] Collisions are perfectly elastic[/s]


alternative 2 versions here
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1976.0 by Fu-Kwun Hwang