An Object of Mass M = 8 $2.2 \mathrm {~cm}$ Before It Reaches Its Equilibrium Position

Multiple Choice

An object of mass m = 8.0 kg is attached to an ideal spring and allowed to hang in the earth's gravitational field. The spring stretches $2.2 \mathrm {~cm}$ before it reaches its equilibrium position. If it were now allowed to oscillate by this spring, what would be its frequency?

A) 3.4 Hz
B) 0.28 x 10^-3 Hz
C) 0.52 Hz
D) 1.6 Hz