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Question
Explain why does the rear mirror of a motorbike start Vibrating Violently, at some particular speed of motorbike?
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Solution
When the frequency of the engine of motorbike corresponds with the natural frequency of the rear view mirror, die resonance takes place. Thus, the rearview mirror vibrates with a larger amplitude violently.
RELATED QUESTIONS
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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.
The diagram below shows three different modes of vibration P, Q and R of the same string of a given length.
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| P | Q | R |
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