A particle of mass $m$ is moving along the $x-\mathrm{a}\mathrm{x}\mathrm{i}\mathrm{s}$ under the potential  $V(x)=\frac{k{x}^2}{2}+\frac{\lambda }{x^{\prime }}$  where $k$ and  $x^{\prime }$ are positive constants of appropriate dimensions. The particle is slightly displaced from its equilibrium position. The particle oscillates with the angular frequency $\left(\omega \right)$ given by