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[几何] 继续弹簧问题

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nijupeng posted 2016-8-10 18:56 |Read mode
QQͼƬ20160809094412.png 弹簧本身长度L,质量m 劲度系数k,相距L悬挂,重力拉伸稳定后求这个“悬链”方程,与弹簧线密度函数

用势能变分法涉及到两个函数了……

m=k=L=1  g=10求数值解

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