ok, im trying to measure thevalue of g using a mass attatched to a spring. i have the period of bounce, the mass of the..well...mass, and the elastic constant of the spring. i have been informed its relatively easy to find g using this setup but im struggling. iv spent the last 3 nights either rearranging formulae or serching the internet and my brains dead and i really need a break from this. anyone? any help like atall is massivley appreciated. though as usual the answers probably pretty obvious and im jst being blind. but thanks anyway.