一、利用平衡法测“g”分别用天平和弹簧秤测出某物体的质量m和重力G,则有g=Gm.二、利用单摆测“g ”当摆角小于5°时,单摆的周期公式为T=2πLg姨.只要测量摆长L,摆动次数n,摆动时间t,则有g=4π2n2Lt.若摆球质量分布不均匀,并且刻度尺的长度只有15cm,则不宜来直接测量摆长,可以 First, the use of equilibrium method to measure “g”, respectively, with a balance and spring balance to measure the mass of an object m and gravity G, g = Gm. Second, the use of pendulum test “g” When the swing angle is less than 5 °, the pendulum As long as the measurement of the length of L, the number of oscillations n, swing time t, then there g = 4π2n2Lt. If the ball mass distribution is uneven, and the scale length of only 15cm, it is not appropriate to measure directly Long, you can