A force of magnitude 750.0 N stretches a certain spring by 0.220 m from its equilibrium...

A force of magnitude 750.0 N stretches a certain spring by 0.220 m from its equilibrium position. a)What is the force constant of this spring? b)How much elastic potential energy is stored in the spring when it is stretched 0.360 m from its equilibrium position. c)How much elastic potential energy is stored in the spring when it is compressed by 0.360 m from its equilibrium position? d)How much work was done in stretching the spring by the original 0.220 m ?

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