In vibratory motion_________________?
Correct answer: C. total energy remains constant
- A. P E remains constant
- B. K E remain constant
- C. total energy remains constant
- D. total momentum remains constant
Explanation
In ideal vibratory motion, kinetic energy changes into potential energy and back again, but their sum, the total mechanical energy, remains constant. Students may choose kinetic energy because the object keeps moving, but its speed and therefore its kinetic energy vary during the vibration.
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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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