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| + | ====== 5. Elastic wave dynamics ====== | ||
| + | Suspend a metal ball from a fixed support using a rubber band and twist it many times around its vertical axis. When the ball is released, standing waves are formed on the rubber band. Investigate this phenomenon and study how the wave depends on relevant parameters. | ||
| + | ====== 5. 弹性波动力学 ====== | ||
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| + | 使用橡皮筋将金属球悬挂在固定支架上，并围绕其垂直轴扭转多次。当球被释放时，橡皮筋上会形成驻波。研究该现象并探讨波动特性与相关参数的依赖关系。 | ||