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प्रश्न
Distinguish between the free (or natural) and forced vibrations.
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उत्तर
| Natural Vibration | Forced Vibration | |
| i. | An object's natural vibrations are its inherent vibrations, which occur at a consistent amplitude and frequency. |
Forced vibrations are those that occur as a result of being subjected to a periodic external force. |
| ii. | The amplitude changes with time. | Amplitude doesn't change throughout time. |
| iii. | The body's intrinsic frequency causes it to vibrate. | Does not move at its own natural frequency, but instead learns to deduce its own. |
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संबंधित प्रश्न
Why is a loud sound heard at resonance?
(i) Define resonant vibrations.
(ii) Which characteristic of sound, makes it possible to recognize a person by his voice without seeing him?
In Fig. A, B, C and D are four pendulums suspended from the same elastic string XY. The lengths of pendulum A and D are equal, while the length of pendulum B is shorter and of the pendulum C is longer. Pendulum A is set into vibrations.
- What is your observation about the vibrations of pendulum D?
- Give reason for your observation in part (a).
- What type of vibrations take place in pendulums Band C?
- Give reason for the answer in part (c).
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Explain Why are stringed musical instruments provided with large sound boxes?
What do you understand by forced vibrations?
What are the factors that affect the frequency of a vibrating string and how do they affect the frequency?
Describe a simple experiment to illustrate the phenomenon of resonance and explain it.
When the stem of vibrating tuning fork is pressed on a table, the tabletop starts vibrating. These vibrations are definitely an example of ______.
