A 3 kg block is held 3 meters above the free end of a relaxed massless vertical spring. The block is dropped from rest so that it falls vertically onto the spring and compresses it by a distance of 0.2 meters. Use energy conservation to find the spring constant. A.) 7412 N/m B.) 4704 N/m C.) 9725 N/m D.) 3128 N/m

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