Grade 12 Physics, Coefficient of Friction

[JamesNam]

Homework Statement

Derivation of an equation for the coefficient of kinetic friction
*Since it's just a derivation, values won't be required, right?
*No mass was given

Homework Equations

Ff = μF_N
F_N = FgCosθ
F_net= F_app - Ff - FgSinθ <- Not sure about this.

The Attempt at a Solution

We had to draw a free body diagram so I"ll upload it

 

[tiny-tim]

Welcome to PF!

Good morning JamesNam! Welcome to PF!

Homework Statement

Derivation of an equation for the coefficient of kinetic friction
*Since it's just a derivation, values won't be required, right?
*No mass was given

Homework Equations

Ff = μF_N
F_N = FgCosθ

The Attempt at a Solution

We had to draw a free body diagram so I"ll upload it

I'm confused … what exactly is the question?

(and what's your answer?)

 

[JamesNam]

Thanks for the welcome! And we have to derive an equation for μ_k from the free body diagram that I have attatched.

 

[tiny-tim]

is it stationary or moving?

anyway, show us what you've tried ​