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ping pang qiu de " fan chang " yun dong
Author(s): WANG Wentao, LIU Gang, TANG Qilin
Pages: 78-
79
Year: 2011
Issue:
4
Journal: Physics Bulletin
Abstract: 我们知道,由于惯性,物体运动状态发生变化时,看起来好像呈"相反"的运动状态;比如刹车时乘客向前倾倒,车启动时乘客向后倾倒.在教学中还有这样一个惯性"反常"的问题引起了学生的兴趣:在一个密闭、充满水的长方体容器的顶部和底部分别系一个铁球和一个乒乓球,如图1(a)所示,刚开始容器静止,铁球和乒乓球都静止在竖直位置上.
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