chapter  7
7 Pages

Fundamentals of vibration

Vibration occurs when a body oscillates repeatedly around an equilibrium pos-

ition. The simplest form of vibration can be observed when a small mass is hung

from a spring. Left to itself, the mass will come to rest at the position where the

gravitational force acting on it is equal in size (but opposite in direction) to the

force exerted by the stretched spring (Figure 7.1).