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某日,一名高一学生拿着数学书问我一道题目,我一看题图是静力学平衡的模型.学生说,数学老师解出的答案与某参考书(市面上流行的一个品牌)上的不一样.按道理,虽然解法不同,但结果应该是相同的,搞不清问题出在哪里.让我们一起来看看.原题如图1所示,一根绳穿过两个定滑轮,且两端分别挂有3 N、2 N的重物.现在两个滑轮之间的绳上挂一个重量为m(N)的重物,恰好使得系统处于平衡状态,求正数m的取值
One day, a high school student holding a math book asked me a question, I see the diagram is static balance model.Students said that the answer math teacher and a reference book (a popular brand on the market) Logically, although the solution is different, but the results should be the same, do not know where the problem lies. Let us take a look at the original title shown in Figure 1, a rope through the two set Pulleys with 3 N, 2 N weight attached to each end, and now a weight of m (N) is hung on the rope between the two pulleys, just to make the system in equilibrium, finding a positive number m Value