In addition to watch though shock, but strong impact in the outside world is easy to make the pendulum shaft tip or gear shaft broken, can make the vibration of the walking speed needle.
另外手表虽防震，但在外界的冲击力较强时易使摆轴尖或轮系轴颈折断，亦可使快慢针震动影响走时。
2
We have studied the character of the motion of the torsion pendulum, and discussed how torsion pendulum responds to external shock and how the period of the torsion pendulum is changed.
我们对扭秤的运动特性进行了深入的研究，讨论了扭秤对外界冲击的响应和扭秤的运动周期是如何改变的。
3
Studying the equation of motion of damped simple pendulum, the shock wave solution is found.