Coeficient of kinetic friction

[genu]

Homework Statement

Using Newton's Laws, show how you would measure mu k for an accelerating block.

Homework Equations

Fnet = ma

The Attempt at a Solution

I can't seem to relate Fnet to Mu k...

 

[LowlyPion]

Won't the Force of friction be the difference between the ideal acceleration and measured acceleration times the mass?

a_net = a - μ

a - a_net = μ