A spring is hung from the ceiling. When a block is attached to its end, it stretches 2.0 cm before reaching its new equilibrium length. The block is then pulled down slightly and released. What is the frequency of oscillation? I don't know how I'd get the frequency, so I just started with the things I knew. F = ma = -kx 9.81m = -0.02k ...and then I got stuck. Am I going in the right direction? If so, where next? If not, what should I try instead?