(14-16) The graph of displacement vs. time for a small mass m at the end of a spring is shown in Fi

(14-16)  The graph of displacement vs. time for a small mass m at the end of a spring is shown in Fig. 14-30. At t = 0, x = 0.43 cm. (a) If m = 9.5 g, find the spring constant, k. (b) Write the equation for displacement x as a function of time.