一、问题的提出初中物理在探究“杠杆平衡条件”的实验教学中,经常碰到这类例题:如图1所示,某同学在探究杠杆平衡条件实验时做了三次实验,得到三组数据,设计实验表格(表1)并得到以下数据。 First, the problem raised Junior high school physics in the exploration of “Leverage conditions ” experiment teaching, often encounter such examples: as shown in Figure 1, a student in the study of lever equilibrium conditions experiments done three experiments, we get three Group data, design experiment table (Table 1) and get the following data.