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力学（十三）——经典力学中的几何相：为什么猫从高处落下会四脚着地？
source link: https://zhuanlan.zhihu.com/p/35520060
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从傅科摆说开去[1,5,8]考虑一基准频率 \[\omega = \sqrt {\frac{g}{l}} \] 的二维平面摆，而其摆点受到地球自转影响，自转角速度为 \vec \Omega ，因而这是在非惯性参考系的运动，考虑其拉格朗日量[1]:\[L = \frac…
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