振动周期的确定方法范小辉（江苏启东中学，２２６２００）在振动问题中，求得运动物体的周期常常是解题的第一步．而周期的得到，除了一些比较简单的物理模型，如弹簧振子、单摆等可直接套用公式外，绝大部分问题需要采用一些特殊方法，如定义法、能量法、方程法、等效... The method of determining the vibration period Fan Xiaohui (Jiangsu Qidong Middle School, 226200) In the vibration problem, finding the cycle of a moving object is often the first step to solve the problem. The cycle is obtained, except for some relatively simple physical models, such as spring oscillators, pendulums, etc., which can directly apply the formula, most of the problems need to use some special methods, such as definition method, energy method, equation method, and equivalent.. .