# Homework Help: Simple compression problem

1. May 8, 2010

### Stroodle

Hi there,

For this question, I've been asked to calculate the maximum energy a spring can store when compressed by 8cm. I've already found the spring constant to be $$5.0\times 10^5\ Nm^{-1}$$ (which is correct), so I thought it was just a simple matter of pluggung the values into the formula: $$E_e=\frac{1}{2}kx^2$$

When I do this I get the answer: $$2.0\times10^5\ J$$, but the book says the answer is $$1.6\times10^3\ J$$