The rear view mirror of motor bike starts vibrating violently at some particular speed of motor bike.
Q. The rear view mirror of motor bike starts vibrating violently at some particular speed of motor bike.
(a) Why does this happen?
(b) What is the name of the phenomenon taking place?
(c) What could be done to stop the violent vibration?
Ans. (a) This happens only when the frequency of vibration of the engine of bike becomes equal to the natural frequency of the rear view mirror.
(b) The name of this phenomenon is resonance.
(c) The speed of the bike should be change and this will change the frequency of vibration of the engine.
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