Artigo
Force-versus-time curves during collisions between two identical steel balls
Fecha
2006-03-01Registro en:
American Journal of Physics. Melville: Amer Associação Physics Teachers Amer Inst Physics, v. 74, n. 3, p. 176-179, 2006.
0002-9505
10.1119/1.2173276
WOS:000236058300002
WOS000236058300002.pdf
Autor
Universidade Estadual Paulista (Unesp)
Resumen
We describe a numerical procedure for plotting the force-versus-time curves in elastic collisions between identical conducting balls. A system of parametric equations relating the force and the time to a dimensionless parameter is derived from the assumption of a force compatible with Hertz's theory of collision. A simple experimental arrangement consisting of a mechanical system of colliding balls and an electrical circuit containing a crystal oscillator and an electronic counter is used to measure the collision time as a function of the energy of impact. From the data we can determine the relevant parameters. The calculated results agree very well with the expected values and are consistent with the assumption that the collisions are elastic. (C) 2006 American Association of Physics Teachers.