Circular Motion

A small block of mass \(100 \mathrm{~g}\) is tied to a spring of spring constant \(7.5 \mathrm{~N} / \mathrm{m}\) and length \(20 \mathrm{~cm}\). The other end of spring is fixed at a particular point A. If the block moves in a circular path on a smooth horizontal surface with constant angular velocity \(5 ~\mathrm{rad} / \mathrm{s}\) about point \(\mathrm{A}\), then tension in the spring is -