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2004年理科综合能力测试第25题的题目:一小圆盘静止在桌布上,位于一方桌的水平桌面的中央。桌布的一边与桌的AB边重合,如图1。已知盘与桌布间的动摩擦因数为μ1,盘与桌面间的动摩擦因数为μ2。现突然以恒定加速度a将桌布抽离桌面,加速度的方向是水平的且垂直于AB边,若圆盘最后?
The title of Question 25 of the 2004 Science Comprehensive Capability Test: A small disc rests on the tablecloth in the center of a horizontal table on a side table. One side of the tablecloth coincides with the AB side of the table, as shown in Figure 1. It is known that the dynamic friction coefficient between the plate and the table cloth is μ1, and the dynamic friction coefficient between the plate and the table is μ2. Suddenly, with a constant acceleration a, the tablecloth is pulled off the table. The direction of acceleration is horizontal and perpendicular to the AB side. If the disc last?