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## Homework Statement

Practice problem for midterm.

## Homework Equations

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T_1+U_1=T_2+U_2

U_spring=1/2kx^2

## The Attempt at a Solution

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Set X-axis along the 30 degree line and the Y-axis perpendicular.

I'm not sure how to consider the friction constant into the formula.

Any help is very much appreciated.