In damped harmonic oscillation which one decreases ?
Correct answer: C. Both amplitude and energy
- A. Amplitude of vibration
- B. Energy of vibration
- C. Both amplitude and energy
- D. Neither amplitude nor energyCalibrating Electrical Test And Measurement Equipment
Explanation
Damping removes energy from an oscillator, causing its amplitude to decrease with time. Since oscillator energy is proportional to the square of amplitude, its energy also decreases. Students may choose a because the falling amplitude is visible, but the associated mechanical energy falls as well.
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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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