中学物理中一些比较抽象的习题常较难求解,若能与数学图形相结合,再恰当地引入物理图象,则可变抽象为形象,突破难点、疑点,使解题过程大大简化.图象法是历年高考的热点,因而在物理学习中要密切关注图象,掌握图象的识别、绘制等方法.下面就通过几道例题看看图像法在物理解题中的应用.一、利用图像解决基本问题例1如图1所示,一薄木板放在正方形水平桌面上,木板的两端与桌面的两端对齐,一小木块放在木板的正中间.木块和木板的质量均为m,木块与木板之间、木板与桌面之间的动摩擦因数都为μ.现突然以一水平外力F将薄木板抽出,要使小 Some abstract exercises in middle school physics are often difficult to solve. If we can combine with mathematical figures and then properly introduce physical images, we can change abstraction to be an image to break through difficult points and doubt points so that the problem-solving process can be simplified greatly. Image method is the hot spot of college entrance examination over the years, and therefore in physical learning should pay close attention to the image, grasp the image recognition, drawing and other methods. Here are a few examples to see the image method in the physical problem solving application. Example of basic image resolution 1 As shown in Figure 1, a thin wooden board is placed on a square horizontal desktop with two ends of the wooden board aligned with the two ends of the desktop, and a small wooden board placed in the middle of the board. For m, wood and wood, between the board and the desktop dynamic friction factor μ. Suddenly to a horizontal force F will be out of thin wood, to make small