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प्रश्न
Give examples of forced vibrations.
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उत्तर
- When the stem of a vibrating tuning fork is pressed against the top of a table, the tuning fork forces the table top to vibrate with its own frequency. The vibrations produced in the tabletop are forced vibrations.
- When a guitar is played, the vibrations produced by the strings of the guitar are the forced vibrations.
संबंधित प्रश्न
Define the resonance phenomenon.
In following figure shows two tuning forks A and B of the same frequency mounted on two separate sound boxes with their open ends facing each other. The fork A is set into vibration.
- Describe your observation.
- State the principle illustrated by this experiment.
When a troop crosses a suspension bridge, the soldiers are asked to break steps. Explain the reason.
Differentiate between the following:
Light and sound waves.
The rearview mirror of a motorbike starts vibrating violently at some particular speed of the motorbike. What is the name of the phenomenon taking place? Why does the happen?
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.
What do you understand by forced vibrations?
What do you understand by free vibrations of a body? Draw a displacement-time graph to represent them. Given one example.
