The mass attached to a spring executes ?
Correct answer: D. Both A and C
- A. Vibratory motion
- B. Rotatory motion
- C. S.H.M
- D. Both A and C
Explanation
A mass attached to an ideal spring moves repeatedly to and fro, which is vibratory motion, and its restoring force is proportional to displacement, so the motion is SHM. Therefore both descriptions apply. Students may choose c by noticing the SHM property but overlooking that SHM is also a type of vibratory motion.
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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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