单摆周期有上限吗

Is there the upper limit of period of a simple pendulum

讨论了单摆作微小振动时的周期与摆长的关系,给出了单摆作微小振动时周期的上限,并与几种常见的力学现象进行了比较.

The relation between the length and period of a simple pendulum is discussed. The upper limit of it＇s period for small oscillation is given and the motion of simple pendulum is compared with other dynamical phenomenon.