On the Vibration of a Pendulum by Sound Waves

Abstract

In this paper it is treated on the case that a spherical pendulum is forced to vibrate from repose by plane waves. The authors give the solution for the vibration of the pendulum, when the motion of the air particle is cxpressed by the following formula It is proved that there is an oscillation which occurs in an instant of the arrival of sound waves at the pendulum and vanishes rapidly, besides the forced and self oscillations.