A spring has k = 88 N/m. Draw a graph like that in Fig. 7-12 (see attachment). Use the graph to determine the work needed to stretch the spring from x = 4.4 cm to x = 6.6 cm, where x = 0 refers to the spring's unstretched length.
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This solution is provided in 55 words in an attached .doc file. It provides a diagram of a graph and the work required to stretch the spring.