Okay, this is my 1st time posting, the thing in this problem thatis throwing me

Question

Okay, this is my 1st time posting, the thing in this problem thatis throwing me off is the friction. I don't know how to takeit in to effect.

The Question is:

A block of mass 5.00 kg compresses a spring (spring constant k=96.5N/m) a distance d=0.600 m from its equilibrium position; the blockis not attached to the spring. The block is then released from restand moves across a smooth (frictionless) horizontal surface untilit encounters and moves up an inclined plane which makes an angleof =42.0 degrees with respect to the horizontal. Thecoefficient of kinetic friction between the block and the inclinedplane is k=0.200. What distance D measured alongthe plane will the block move up the plane before coming torest?
http://i41.tinypic.com/mim8uu.jpg


Relative equations

U_el=1/2kx^2
KE=1/2mv^2

I know you are converting all of your potential elastic energy intoKenetic energy, so you set the equations equal to eachother.

So, 1/2kx^2=1/2mv^2 , but then you have friction, and this iswhere I am stuck. I dont know how to
account to the friction.

Can anyone help me please?!?

Explanation / Answer

The friction does Work. I think you've to add W=Fs to your energy equation. Where F = friction force = Fn (coefficent x normal force)

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