物体a和b用轻绳相连挂在轻质弹簧下静止不动如图甲所示a的质量为m1b的质量为m当连接ab的绳突然断开后物体a上升经某一位置时的速度 Template




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tomski物体a和b用轻绳相连挂在轻质弹簧下静止不动如图甲所示a的质量为m1b的质量为m当连接ab的绳突然断开后物体a上升经某一位置时的速度 coloring