一、平衡法和分解法三力平衡问题既可以用平衡的观点(根据平衡条件建立方程求解)——平衡法,也可以用力的分解的观点求解——分解法.两种方法可视具体问题灵活运用.例1如图1所示,比滑斜面的倾角为θ.有两个相同的小球,分别用光滑挡板A、B挡住,挡板A沿竖直方向.挡板B垂直斜面,则两挡板受到a、b两个小球压力大小之比为____,斜面受到a、b两个小球压力大小之比为____. First, the three-force balance between the balance method and the decomposing method can be used from a balanced point of view (establishing equations based on equilibrium conditions)--equilibrium method, but also from the point of view of forceful decomposition--decomposition method. Two methods can be used to visualize specific problems. Flexible use. Example 1 As shown in Figure 1, the inclination angle of the sliding slope is θ. There are two identical balls, each blocked by a smooth baffle A and B, and the baffle A is in the vertical direction. The baffle B is vertically inclined. , the two baffles by the a, b two small ball pressure ratio ____, the slope by the a, b two small ball pressure ratio of ____.