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प्रश्न
Resonance is a special case of ______ vibrations, when frequency of the driving force is ______ natural frequency of the body.
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उत्तर
Resonance is a special case of forced vibrations, when frequency of the driving force is equal to the natural frequency of the body.
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संबंधित प्रश्न
How does the medium affect the amplitude of free/natural vibrations of a body?
Describe a simple experiment to illustrate the phenomenon of resonance and explain it.
Differentiate between the forced and resonant vibrations.
When a troop crosses a suspension bridge, the soldiers are asked to break steps. Explain the reason.
When a body vibrates under a periodic force, the vibrations of the body are ______.
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).
Differentiate between the following:
Light and sound waves.
A vibrating tuning fork is placed over the mouth of a burette filled with water. The tap is opened and the water level gradually falls. It is observed that the sound becomes the loudest for a particular length of the air column. What is the name of the phenomenon taking place when this happens? Why does the sound become the loudest?
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 free vibrations of a body? Draw a displacement-time graph to represent them. Given one example.
