1. The problem statement, all variables and given/known data The graph of displacement vs. time for a small mass at the end of a spring is shown in the figure. At t = 0, x = 0.43 cm. If m = 16.9 gram, find the spring constant, k. T = 0.69 seconds 2. Relevant equations F = kx 3. The attempt at a solution mg=kx (.0169 kg)(9.8 m/s^2) / (.0043m) = 38.56 Which is wrong. Is there another way to solve this problem that i'm not seeing?