A horizontal rule is fix pivoted at one end so that it can rotate downwards. Coins placed on the rod will fall, but will they all leave the rod at the same time? In a second experiment can you beat gravity and catch two coins balanced on a glass.

中文翻译：

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比“ g”快-这个问题

将水平尺固定在一端，使其可以向下旋转。放在杆上的硬币会掉下来，但是它们会同时全部离开杆吗？在第二个实验中，您可以击败重力并在玻璃杯上平衡放置两个硬币吗？