Advertisements
Advertisements
प्रश्न
Differentiate between the following:
Free and forced vibrations.
Advertisements
उत्तर
| Free vibrations | Farced vibrations |
| 1. When a body vibrates with its natural frequency and ti me period which is characteristic of the body itself, it is said to have free vibrations. | 1. When a body is set into vibrations with the help of a strong periodic force then the vibration is said to be forced vibration. The frequency of such vibrations may not be equal to the natural frequency of the body. |
| 2. It is difficult to realize such vibrations in practice. They can take place only in vacuum. | 2. Such vibrations can be realized in practice. |
APPEARS IN
संबंधित प्रश्न
What are mechanical waves?
How does the medium affect the amplitude of free/natural vibrations of a body?
In following figure shows A, B, C and D are four pendulums suspended from the same elastic string XY. Lengths of pendulum A and D are equal, while the length of pendulum B is smaller and the pendulum C is longer. The pendulum A is set into vibration.
(a) what is your observation? (b) Give reason for your observation.
Name the phenomenon involved in tuning your radio set to a particular station and define it.
(i) Define resonant vibrations.
(ii) Which characteristic of sound, makes it possible to recognize a person by his voice without seeing him?
Differentiate between the following:
Light and sound waves.
On keeping the stem of a vibrating tuning fork on the surface of a table, a loud sound is heard. Give reason.
What do you understand by free (or natural) vibrations?
What do you understand by free vibrations of a body? Draw a displacement-time graph to represent them. Given one example.
