A 3kg mass starts at rest and slides a distance d down a smooth 30deg incline, where it contacts an unstressed spring. It slides an additional 0.2 m as it is brought momentarily to rest by compressing the spring (k=400N/m)
What is the initial separation d between the mass and the spring?
Vf = Vi + at
Us = 1/2kx^2
Ug = mgh
K = 1/2mv^2
The Attempt at a Solution
I'm not sure how to approach this problem yet. I know that you need to find the Vf, using mgsin30 as the acceleration and Vi=0.