Abstract

A simple benchtop experiment in which a moving cart collides with a fixed spring is described. Force–time and force–distance data recorded during the collision display the transit of compression wave fronts through the spring following impact. These data can be used by students to develop a computational model of the dynamics of this simple mass–spring–sensor system using a simple application of the wave equation and thereby develop an intriguing picture of how a spring realizes Hooke's law approximately in this dynamic physical problem.

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