Instantaneous acceleration of system executing SHM is directed:
Correct answer: B. Away from the mean position
- A. Towards the mean position
- B. Away from the mean position
- C. Perpendicular to the mean position upward
- D. Perpendicular to the mean position downward
Explanation
b) Away from the mean position:This option suggests that the instantaneous acceleration of a system executing SHM is directed away from the mean position. This is correct. In SHM, when the system is at a point away from the mean position, the acceleration is directed away from the mean position, trying to restore the system back towards the mean position.
This question appeared on the HEC Phase II 2017 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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