Advertisements
Advertisements
Question
Advertisements
Solution
Examples of forced vibrations:
1. 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 table top are forced vibrations.
2. When a guitar is played, the vibrations produced by the strings of the guitar are the forced vibrations.
APPEARS IN
RELATED QUESTIONS
What are mechanical waves?
How does the medium affect the amplitude of free/natural vibrations of a body?
The diagram below shows three different modes of vibration P, Q and R of the same string of a given length.
![]() |
![]() |
![]() |
| P | Q | R |
- Which vibration will produce a louder sound and why?
- Which vibration will produce sound of maximum shrillness (or pitch) and why?
- What is the ratio of wavelength of vibrations P and R?
Give two examples of forced vibrations.
Explain why stringed musical instruments, like the guitar, are provided with a hollow box.
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 (or natural) vibrations?
What are the factors that affect the frequency of a vibrating string and how do they affect the frequency?



