support and its free end carries a mass of 0.40 kg which produces an extension of 0.060 m in the spring. The mass is then pulled down a fierther 0.060 m and released causing the mass to oscillate with simple harmonic motion. (a) Potential energy is stored in two ways in this arrangement: explain briefly what they are. (b) Calculate the kinetic energy of the mass as it passes through the mid-point of its

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