### How much work was done in stretching the spring

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A force of magnitude 880.0N stretches a certain spring by 0.190m from its equilibrium position. What is the force constant of this spring? How much elastic potential energy is stored in the spring when it is stretched 0.400m from its equilibrium position.How much elastic potential energy is stored in the spring when it is compressed by 0.400m from its equilibrium position? How much work was done in stretching the spring by the original 0.190m ?

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