Two equal masses are attached to the two ends of a spring of spring constant k....

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Two equal masses are attached to the two ends of a spring of spring constant k. The masses are pulled out symmetrically to stretch the spring by a length x over its natural length. The work done by the spring on each mass is - 1 (a) = kx² (b) ==—= kx² (c) =—= kx² 77 1 1 (d) -4kx² Two equal masses are attached to the two ends of a spring of spring constant k. The masses are pulled out symmetrically to stretch the spring by a length x over its natural length. The work done by the spring on each mass is - 1 (a) = kx² (b) ==—= kx² (c) =—= kx² 77 1 1 (d) -4kx²