进行正确的受力分析和状态分析是解决大部分高中物理问题的基础,而在进行受力分析时往往很多老师凭借经验会跟学生传授“能整体的不隔离”的解题思想,当然有一定的道理。事实真的如此吗?本文将从以下几个例题中加以说明。一、“能隔离却整体”的应用例1:如图1所示,在水平地面上有一个质量为M的三角形木块,在它的两个粗糙斜面上分别放有两个质量分别为m1和m2的小木块,>★,已知三个物体均处于静止状态,则水平地面对三角 Performing the correct stress analysis and state analysis is the basis for solving most of the high school physics problems. However, in the analysis of stress, many teachers often use the experience to teach the students the problem of solving the problem of “the whole can not be isolated”. Of course There is some truth. In fact, this is the case from the following examples to illustrate. First, the “can be isolated but the overall” Application Example 1: As shown in Figure 1, in the horizontal ground there is a triangular block of wood M quality, respectively, in its two rough bevel respectively put two mass respectively M1 and m2 for the small wooden block,> ★, known three objects are at rest, then face the triangle horizontally