不需要复杂的微分方程,不需要高深的计算机程序,同样可以计算出大摆角单摆的周期.本文借助Excel软件,采用“微元”思想,研究无阻尼状态下单摆的大摆角运动,得出了不同摆角下单摆运动的周期值,同时可画出大摆角单摆的位移图像及速度图像等,为单摆实验中大摆角问题的讲解提供了较好的教学辅助手段. Without the need of complex differential equations and without the need of sophisticated computer programs, the cycle of large swing angle pendulums can be calculated as well. In this paper, using the Excel software, the concept of “micro element ” is used to study the pendulum pendulum without damping Angle motion, the periodic values ​​of the pendulum movements under different swing angles are obtained, and the displacement images and the speed images of the large swing angle pendulum can be drawn at the same time. This provides a better explanation for the swing angle problem in the pendulum experiment Teaching aids.