4. The graph of displacement vs. time for a small mass m at the end of a spring is shown in Fig. 2 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. [Ans: (a) 0.79 N/m (b) x 0.82 cm cos (9.1t- 1.0)] 0.82 cm 0.82 cm 0.43 cm 0.69 s Fimura

4. The graph of displacement vs. time for a small mass m at the end of a spring is shown in Fig. 2 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. [Ans: (a) 0.79 N/m (b) x 0.82 cm cos (9.1t- 1.0)] 0.82 cm 0.82 cm 0.43 cm 0.69 s Fimura

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