Pinball spring problem help me please

[pc21]

Homework Statement

The ball launcher in a pinball machine has a spring that has a force constant of 1.10 N/cm (Fig. P5.71). The surface on which the ball moves is inclined 10.0° with respect to the horizontal. If the spring is initially compressed 6.00 cm, find the launching speed of a 0.100 kg ball when the plunger is released. Friction and the mass of the plunger are negligible.

Homework Equations

The Attempt at a Solution

 

[belliott4488]

Have you been able to make a start on this at all? Can you at least identify the relevant equations? You have to show some initial effort or you might not get much help here.

 

[pc21]

PE= mgy
KE=1/2mv^2
PE=1/2kx^2

i know the problem has got to be set up using PE1=KE2+PE2, but I'm at a loss of which equations will work correctly. I've tried a couple and my velocities are all over. Any help would be appreciated.