如图所示,倔强系数为k的轻质弹簧竖直放置,下端系一质量为m的小球,开始时弹簧处于原长状态而小球恰与地接触今将弹簧上端缓慢拉起,直到小球刚好 Template




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tomski如图所示,倔强系数为k的轻质弹簧竖直放置,下端系一质量为m的小球,开始时弹簧处于原长状态而小球恰与地接触今将弹簧上端缓慢拉起,直到小球刚好 coloring