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प्रश्न
What do you understand by forced vibrations?
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उत्तर
Sometimes to keep a body vibrating, a periodic force is applied to it. In such a case, the body does not vibrate with its own natural frequency but gradually starts vibrating with the frequency of the applied periodic force. Such vibrations produced in a body are called forced vibrations, e.g., in a string of musical instruments, when the vibrations producing a loud sound.
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संबंधित प्रश्न
Define the Resonance phenomenon?
What are mechanical waves?
Why is a loud sound heard at resonance?
Name the phenomenon involved in tuning your radio set to a particular station and define it.
On keeping the stem of a vibrating tuning fork on the surface of a table, a loud sound is heard. Give reason.
A bucket kept under a running tap is getting filled with water. A person sitting at a distance is able to get an idea when the bucket is about to be filled.
(i) What change takes place in the sound to give this idea?
(ii) What causes the change in the sound?
Give two examples of forced vibrations.
