# Energy physics help: Finding spring constants

1. Mar 29, 2012

### sisi17

The question gives me a graph of spring 1 and spring 2 (which I will attach to the post) and it asks me what are the springs constants. I have no idea how to find the spring constants. I know that the Potential Elastic equation is (1/2)k(x^2), but I don't know where to start with looking at this graph!! Please help!!
It's question 1a.

1. The problem statement, all variables and given/known data

2. Relevant equations

E=1/2k(x^2)

3. The attempt at a solution

2. Mar 29, 2012

### QuarkCharmer

Hooke's Law:

$$F = -kx$$

Knowing that, can you find the constant?