The velocity of a particle moving with simple harmonic motion, at any instant is given by (where $$\omega $$ = Displacement of the particle from mean position)

A. $$\omega \sqrt {{{\text{x}}^2} - {{\text{r}}^2}} $$

B. $$\omega \sqrt {{{\text{r}}^2} - {{\text{x}}^2}} $$

C. $${\omega ^2}\sqrt {{{\text{x}}^2} - {{\text{r}}^2}} $$

D. $${\omega ^2}\sqrt {{{\text{r}}^2} - {{\text{x}}^2}} $$

Answer: Option B