Coefficient of friction of a block on a spring

[CSwitzer]

Homework Statement

Find the coefficient of kinetic friction between a 4.3- block and the horizontal surface on which it rests if an 89 spring must be stretched by 2.3 to pull the block wi`th constant speed. Assume the spring pulls in a direction 15 above the horizontal.

Homework Equations

Fk = $$\mu$$kN

The Attempt at a Solution

I'm completely lost on this one, I don't understand how to find anything with the spring to convert it to a Normal force.

 

[Precursor]

Include some units in your problem statement so that it is clearer.

For almost any physics problem, start with a Free Body Diagram. In this case, draw the FBD of the block and plot all the forces acting on it. This should make it much easier to understand what you need to do next.