Question

Which are characteristics of forced vibrations?

Options

• These vibrations are produced by a body in the presence of external periodic force.

• There frequency is equal to the frequency of applied external force.

• There amplitude is very small, if the frequency of applied force differs widely from the natural frequency of body.

• All of these

Answer 1

All of these

Explanation:

All three statements describe forced vibrations. They are produced by an external periodic force, and their frequency equals the frequency of that force. Their amplitude is small when the applied frequency differs widely from the body's natural frequency.