The staples inside a stapler are kept in place by a spring with a relaxed length of 0.116 m. if the spring constant is 46.0 n/m, how much elastic potential energy is stored in the spring when its length is 0.146 m?

The elastic potential energy of a spring is computed by: 1/2 * k * x^2where: k = spring constant = 46 n/m  x = displaced length = 0.146 - 0.116 = 0.03  m = 3 cm  pe = 0.5*46*.023^2 = 0.012167 j = 12.17 mj is the elastic potential energy stored in the spring.

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