A 2.2 kg m is connected to a spring with spring constant k = 160 N/m and unstretched length 16 cm. The pair?

A 2.2 kg m is connected to a spring with spring constant k = 160 N/m and unstretched length 16 cm. The pair are mounted on a frictionless air table, with the free end of the spring attached to a frictionless pivot. The m is set into circular motion at 1.3 m/s. Find the radius of its path.