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प्रश्न
What are forced vibrations?
What is meant by forced vibrations?
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उत्तर
The vibrations of a body which take place under the influence of an external periodic force acting on it are called the forced vibrations.
संबंधित प्रश्न
Name the phenomenon involved in tunning a radio set to a particular station.
What are mechanical waves?
The diagram above shows a wire stretched over a sonometer. Stems of two vibrating tuning forks A and Bare touched to the wooden box of the sonometer. It is observed that the paper rider (a small piece of paper folded at the centre) present on the wire flies off when the stem of vibrating tuning fork B is touched to the wooden box but the paper just vibrates when the stem of vibrating tuning fork A is touched to the wooden box.
1) Name the phenomenon when the paper rider just vibrates.
2) Name the phenomenon when the paper rider flies off.
3) Why does the paper rider fly off when the stem of tuning fork B is touched to the box?
Name the phenomenon involved in tuning your radio set to a particular station and define it.
State two ways in which resonance differs from forced vibrations.
Explain why are soldiers asked to walk out of step while crossing bridges?
When a tuning fork, struck by a rubber pad, is held over a length of the air column in a tube, it produces a loud sound for a fixed length of the air column. Name the above phenomenon. How does the frequency of the loud sound compare with that of the tuning fork? State the unit for measuring loudness.
