Advertisements
Advertisements
प्रश्न
Two pendulums C and D are suspended from a wire as shown in the figure give below. Pendulum C is made to oscullate by displaying it from its mean position. It is seen that D also starts oscillating.

(i) Name the type of oscillation, C will execute.
(ii) Name the type of oscillation, D will execute.
(iii) If the length of D is made equal to C then what difference will you notice in the oscillations of D ?
(iv) What is the name of the phenomenon when the length of D is made equal to C ?
Advertisements
उत्तर
(i) C will execute damped oscillation.
(ii) D will execute forced oscillation.
(iii) D will start executing with very large amplitude.
(iv) Resonance
APPEARS IN
संबंधित प्रश्न
How does the medium affect the amplitude of free/natural vibrations of a body?
Resonance is a special case of ______ vibrations, when frequency of the driving force is ______ natural frequency of the 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.

When a troop crosses a suspension bridge, the soldiers are asked to break steps. Explain the reason.
A tuning fork of frequency 256 Hz will resonate with another tuning fork of frequency:
When acoustic resonance takes place, a loud sound is heard. Why does this happen? Explain.
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?
What do you understand by forced vibrations?
