Calculate Potential Energy of 8.4N Spring w/31.9 N/m Constant

[Rha1828]

A force of 8.4 N holds an ideal spring with a 31.9 N/m spring constant in compression. How much potential energy is stored in the spring?

I would think it would be PE =mgh
to get m you divide the force/g
but now I am not sure what to do after that.
Any help would be great!

 

[Vuldoraq]

Firstly how is F (the force) related to the extension (or compression) of an ideal spring?

 

[djeitnstine]

you will have to find the compressed displacement by the formula f=-kx

 

[Rha1828]

I'm not sure. My Teacher just through this problem at us without much explanation. We haven't even covered springs. I'll look into your question though I am not sure I fully understand it.
Thanks!

 

[Rha1828]

OH! Now I can understand that! Fx= -kx...Thank you I will try and see what I get!