Physics
posted by Jon .
How do you determine the force constant of a spring when given the mass of an object being hung vertically, and the distance the spring stretches? What formula and logic do I need?

Sorry, I forgot to mention the question also gives the period of the oscillations. This confused me.. why would I need that piece of information. Don't I simply use F=kx, then mg=kx and solve for k??

It appears to be oscillating, not hanging still. You cant use kx if it is moving.

Okay.
But I don't understand where to go from here. 
Do I use the formula T=2pi*sprt(m/k) ?
I'm just confused because it seems like I have an extra piece of info I should be using (in this case x).