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中学物理中,力学经常会成为学生们焦头烂额的问题,力学题型可谓是一个庞大的家族,其包含的分支不胜枚举、错综复杂,现就其中一类型利用整体隔离法巧妙地避开误区,举例如下:例1如图1所示,物块A、木板B叠放在水平地面上,B的上表面水平,A、B的质量均为m=1 kg,A与B之间、B与地面之间的动摩擦因数都为μ=0.1。用一根轻绳跨过光滑定滑轮与A、B相连,轻绳
In middle school physics, mechanics often becomes a problem for students. The mechanics questions can be said to be a huge family whose branches are numerous and intricate. One of these types is using the method of general isolation to cleverly avoid misunderstandings. For example, As follows: Example 1 As shown in Fig. 1, block A and board B are stacked on a horizontal ground, the upper surface of B is horizontal, the mass of A and B is m = 1 kg, the distance between A and B, B and ground Between the dynamic friction factor μ = 0.1. With a light rope across the smooth fixed pulley connected with A, B, light rope