误差是指测量值与真实值之间的差异,使用任何测量仪器都会有误差,因此,误差分析经常成为物理考查的重点,天平是初中物理中一个重要的测量仪器,一直以来都是中考命题的香饽饽,测量差异的来源很多,有仪器本身造成的,也有测量者操作错误或不规范造成的,还有可能是测量方法的不当造成的。本文浅析了天平测物体质量差异。 Error refers to the difference between the measured value and the true value, the use of any measuring instrument will have errors, therefore, error analysis often becomes the focus of physical examination, the balance is an important measurement instrument in junior high school physics, has always been the senior high school entrance examination thesis Fragrant fry, the measurement of differences in many sources, caused by the instrument itself, there are also measurement errors or irregular operation caused, and may be caused by improper measurement methods. This article analyzes the mass balance of objects measured by the balance.