Abstract: A slinky exhibits unusual behavior when it is released at the top end from the rest hanging state under

its own weight. This article performs an analysis on the dynamics of a free falling slinky by static and dynamic

models according to college physics，and has found that the peculiar motion of a falling slinky is due to the wave

propagation. The experiments have verified the conclusions from the models.

Key words: slinky, falling process, analysis of dynamics, wave propagation