Resonance occurs when the driving frequency is:
Correct answer: D. Equal to the natural frequency
- A. Greater than natural frequency
- B. Unequal the natural frequency
- C. Less than natural frequency
- D. Equal to the natural frequency
Explanation
Resonance occurs when the driving frequency equals the natural frequency. Resonance occurs when an object experiences an oscillating force that's close to one of its "natural" frequencies, at which it easily oscillates.
This question appeared on the UHS MDCAT 2016 paper, which you can sit online with every answer explained.
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About Simple Harmonic Motion
Simple harmonic motion is oscillation in which acceleration is directly proportional to displacement and directed toward the equilibrium position. Work includes displacement, velocity, acceleration, phase, period, frequency, amplitude and energy, with applications to springs and simple pendulums. The restoring force and the conditions for SHM distinguish it from general periodic motion.
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