Which of the following statements is/are true for a simple harmonic oscillator ?

If 'a' be the acceleration of a particle executing SHM and 'y' be its displacement measured from equilibrium position, then .Since force (F) acting on the particle is given by F = ma, we can write Here F and y are oppositely directed.General equation of SHM is .So y is a periodic function of time,    So v is also a periodic function of time.