Oscillations: Vertical Spring?

Question

A 2.00kg mass is suspended from a vertical spring of spring constant 100N/m and unstretched length .300m. Find the position, relative to the fixed end of the spring, of the point about which the mass will make simple harmonic oscillations.

Answer 1

20N / 100 = 0.2 m

total length = 0.3+0.2=0.5m the position from the fixed end