Forced Oscillations of a Linear Oscillator
Vladimir I. Nekorkin · 2015
This chapter discusses forced oscillations that result from the influence of an external (forced) action on the system. A characteristic feature of forced oscillations is the fact that their properties depend not only on the parameters of the system, but also on the parameters of an external force. The simplest example of such kinds of systems is a linear oscillator affected by a harmonic force. The chapter clarifies how the amplitude of forced oscillations changes depending on the frequency of an external force. The Q factor of the system characterizes the selectivity of the linear oscillator. The resonance phenomenon plays an important role in nature, technology, and science. The resonance effect is at the basis of the operating principle of a large number of various devices and instruments. For example, these are radio circuits, microwave and optical resonators, damping devices, and so on.