In simple harmonic motion, a particle moves to and fro repeatedly about a mean position, under a restoring force whose magnitude at any instant is directly propotional to the displacement from the mean position, and th eforce is directed always towards the mean position.
Infact, SHM of a particle takes place under the condition of stable equilibrium. SHM is the most common form of motion in nature.
Read the above passage and answer the following questions:
(i) Give atleast examples of SHM in nature.
(ii) How is the concept of SHM related in day to day life ?

Explanation

(i) In nature, SHM of air molecules is responsible for propagation of sound in air. Further , SHM of strings produce pleasant sounds in musical instruments like sitar, guitar, viotlin, etc.
(ii) SHM of a particle takes place under the condition of stable equilibrium. In day to day life, each one of us likes stability. We have to move out for carrying out our duties and assignments. But our tendency is always to return to our cnetral place of stable equilibrium. This is how the concept of SHM is related broadly to our daily life.