第二章第二章模态分析
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浮力动态分析扫码看章节配套视频教师免费领取会员例1、如图所示,在容器底部固定一轻质弹簧,弹簧上端连有一边长为01m的正方体物块A,当容器总水的深度为20cm时,物块A游1/2的体积露出水面,此时弹簧恰好处于原长状态(ρ水=10×103kg/m3,g取10N/kg。求:(1)物块A受到的浮力(2)物块A的密度(3)往容器缓慢加水(水未溢出)至物块A恰好浸没时对容器底部的压强P(整个过程中弹簧受到的拉
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