中学阶段,重力加速度的测量原理主要有两种,一种是根据自由落体运动的规律,测定重力加速度。另一种是使用单摆测量其周期,进而间接测量出重力加速度。这两种测量原理中,使用单摆原理测量加速度的方法更丰富一些。其中最简单的方法是,测量者用秒表测量出单摆周期即可。但这种方法要求测量者全神贯注,不能有一点分心,而且在停表时存在超前或滞后现象,造成测量结果误差较大。有 Middle school stage, the main measurement of gravity acceleration principle there are two, one is based on the law of free-fall movement, determination of gravity acceleration. The other is the use of pendulum to measure the cycle, which indirectly measure the acceleration of gravity. Of these two measurement principles, the method of measuring acceleration using the pendulum principle is more abundant. The easiest way is to measure the pendulum with a stopwatch to measure the pendulum cycle. However, this method requires surveyors to concentrate, can not be a little distracted, and in the stop-ahead there exists the phenomenon of lead or lag, resulting in larger measurement error. Have