Forced vibration is known as_____________________?
Correct answer: C. Driven harmonic vibration
- A. Simple harmonic vibration
- B. Natural vibration
- C. Driven harmonic vibration
- D. Free vibration
Explanation
Forced vibration occurs when an external periodic force drives an oscillator, so it is also called driven harmonic vibration. Natural or free vibration occurs at the system's own natural frequency without continuous external driving. Students may choose b by confusing the frequency developed after driving with the natural frequency of the system.
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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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