Answer: In the case of simple harmonic motion, the acceleration of a particle is directly proportional to its displacement. It is directed toward the direction in which it moves relative to its mean position.
When a particle moves in a simple harmonic motion, the total amount of energy it possesses remains unchanged.
The SHM is an example of a periodic motion.
SHM is capable of being embodied by a solitary harmonic function, either sine or cosine.
1- The body has to be worked on by a restoring force.
2- The acceleration of the body must be directly proportionate to the displacement, and it must occur in the direction that is opposed to the direction of the displacement.
3- The system needs to have some kind of inertia (mass).