The P.E. of a particle executing SHM at a distance x from its equilibrium position is

• A

  $\frac{1}{2}{\mathrm{m\omega }}^2{\mathrm{x}}^2$

• B

  $\frac{1}{2}{\mathrm{m\omega }}^2{\mathrm{a}}^2$

• C

  $\frac{1}{2}{\mathrm{m\omega }}^2({\mathrm{a}}^2-{\mathrm{x}}^2)$

• D

  Zero