Advertisements
Advertisements
Question
Resonance is a special case of ______ vibrations, when frequency of the driving force is ______ natural frequency of the body.
Advertisements
Solution
Resonance is a special case of forced vibrations, when frequency of the driving force is equal to the natural frequency of the body.
APPEARS IN
RELATED QUESTIONS
What are mechanical waves?
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.
In following figure shows A, B , C and D represent test tube each of height 20 cm which are filled with water up to heights of 12 cm, 14 cm, 16cm and 18cm respectively. If a vibrating tuning fork is placed over the mouth if test tube D, a loud sound is heard.
- Describe the observations with the tubes A, B and C when the vibrating tuning fork is placed over the mouth of these tubes.
- Give the reason for your observation in each case.
- State the principle illustrated by the above experiment.
A tuning fork of frequency 256 Hz will resonate with another tuning fork of frequency:
In fig. shows two tuning forks P and Q of the same frequency mounted on separate sound boxes with their open ends facing each other. The fork A is set into vibration. (i) Describe your observation. (ii) State the principle illustrated by this experiment.
Explain a person walking past a railway line, in the middle of night hears a ringing sound along with the sound of his footsteps.
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.
