Under the action of the restoring force:
Correct answer: D. The body accelerates
- A. The speed of the body always increases
- B. The body moves at constant speed
- C. The body always slows down
- D. The body accelerates
Explanation
Correct option is D.Under action of restoring force the body start accelerating.The restoring force is directly proportional to the acceleration of the object, since Fx = -kx = ma = -mω^2 x.The restoring force is a force that acts to bring a body to its equilibrium position. The restoring force is a function only of position of the mass or particle, and it is always directed back toward the equilibrium position of the system. The restoring force is often referred to in simple harmonic 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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