State four characteristics of forced vibrations.

1.	State four characteristics of forced vibrations.
Answer» Characteristics of forced vibrations : 1. The body acquires the frequency of external periodic force. 2. The amplitude of forced vibration is very small, if the frequency of external force is much different from natural frequency of the body. 3. The amplitude of vibration remains constant with time, but magnitude depends upon the frequency of the driving force. 4. If the frequency of external force is exactly equal or is an integral multiple vibrating body, the amplitude of oscillation is very large.

Answer»

Characteristics of forced vibrations :

1. The body acquires the frequency of external periodic force.

2. The amplitude of forced vibration is very small, if the frequency of external force is much different from natural frequency of the body.

3. The amplitude of vibration remains constant with time, but magnitude depends upon the frequency of the driving force.

4. If the frequency of external force is exactly equal or is an integral multiple vibrating body, the amplitude of oscillation is very large.

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