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## Homework Statement

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?

## Homework Equations

Pi=Pf

U=mgx, kx^2/2

K=mv^2/2

## 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?