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## Homework Statement

A force of 5.00 N compresses a spring 5.00 cm. What is the elastic potential energy stored in the compressed spring?

## Homework Equations

Ep=1/2kx

^{2}

## The Attempt at a Solution

Epelastic needs to calculated. I really do not know how to get there. K=f/x

k=5N/ 0.05m

100 N/m

the answer is actually 0.125 J