高中物理学习中,经常见到:一条不可伸长的细线,一端固定在空中的某点,另一端系一个小球,手持小球拉至细线水平,由静止释放……一般都是求这一过程中的能量转化,如何求解这一过程的时间呢?如果细线长度一定,摆球质量一定,时间应该也是定值才对。一、分析1.高中课本上单摆周期公式的推导在单摆运动中(如图1),设摆球质量为m,摆长 High school physics learning, often see: a non-elongated thin line, one end fixed in the air at some point, the other end of a ball, hand-held ball pulled thin line level, released by the static ... ... are generally seeking In this process of energy conversion, how to solve the process of time? If the length of thin lines, the quality of the ball must be, the time should also be set. First, the analysis 1. High school textbooks on the single pendulum cycle formula derived In the pendulum movement (Figure 1), set the swing ball mass m, swing length