1. The problem statement, all variables and given/known data A 49 g ice cube can slide without friction up and down a 31° slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 11.9 cm. The spring constant is 25 N/m. When the ice cube is released, what distance will it travel up the slope before reversing direction? 2. Relevant equations Pi=Pf U=mgx, kx^2/2 K=mv^2/2 3. The attempt at a solution Initially U=k*x^2/2 then at the end U=mgLsin31 so then i combined the 2 equations and solve for L and got L=(k*x^2)/(2*.049*9.8*sin(31)) it is saying its wrong....what am i doing wrong?