高中《物理》(必修 )第一册中学生分组实验——验证机械能守恒定律是一个很重要的验证性实验 ,做好这个实验 ,对于帮助学生理解、掌握和巩固该定律都有积极意义 .该实验是选定一个物体从某一高度由静止开始自由下落 ,用打点计时器在纸带上记录物体下落任意高度 h的位置 ,然后用 High school “Physics” (required) Book 1 middle school students group experiments - to verify the law of conservation of mechanical energy is a very important validation experiment, do a good job in this experiment, to help students understand, master and consolidate the law has a positive significance. It is to select an object to fall freely from a certain height from a standstill, record the position of the object falling at any height h on the tape with a dot timer, and then use