# Differentiate Between Free and Forced Vibrations . - Physics

Distinguish Between

Differentiate between free and forced vibrations .

#### Solution

 Sr.No Free vibrations Forced vibrations 1 Free vibrations are produced when a body is disturbed from its equilibrium position and released. Forced vibrations are produced by an external periodic force of any frequency. 2 To start free vibrations only,the force is required initially. Continuous external periodic force is required. If external periodic force sis stopped,then forced vibrations also stop. 3 The frequency of free vibrations depends on the natural frequency. The frequency of forced vibrations depends on the frequency of the external periodic force. 4 Energy of the body remains constant in the absence of friction,air resistance,etc. Due to damping forces , total energy decreases. Energy of the body is maintained constant by the external periodic force. 5 Amplitude of vibrations decreases with time. Amplitude is small bu remains constant as long as external periodic force acts on it. 6 Vibrations stop sooner or later depending on the damping force. Vibrations stop as soon as external periodic force is stopped.
Concept: Free and Forced Vibrations
Is there an error in this question or solution?