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Question
Which of the following example represent periodic motion?
A hydrogen molecule rotating about its center of mass.
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Solution
When a hydrogen molecule rotates about its centre of mass, it comes to the same position again and again after an equal interval of time. Such motion is periodic.
RELATED QUESTIONS
Which of the following example represent (nearly) simple harmonic motion and which represent periodic but not simple harmonic motion?
General vibrations of a polyatomic molecule about its equilibrium position.
Answer in brief:
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