Coefficient of Friction Problem

[CeceBear]

Homework Statement

A block accelerates at 3.7 m/s^2 down a plane at an angle of 26 degrees. Find the coefficient of kinetic friction between the block and the inclined plane. The acceleration of gravity is 9.81 m/s^2.*

Homework Equations

$$\Sigma$$F = ma
F$$_{}k$$ = $$\mu$$$$_{}k$$ * F$$_{}n$$

The Attempt at a Solution

I've drawn the free body diagram and I am currently stuck. The problem doesn't give any values for any of the forces and I'm not sure how to calculate ANY of the forces with just acceleration and an angle.

*This is the complete problem, but on my worksheet it comes with an image diagram.

 

[qswdefrg]

Start off by finding the x-, y-components of Fg. Then you'll be able to solve for Fn.

 

[CeceBear]

Start off by finding the x-, y-components of Fg. Then you'll be able to solve for Fn.

I only have the angle measure though. The problem doesn't give the value for Fg. And it doesn't tell me mass either so I can't even do Fg = mg.

 

[qswdefrg]

I only have the angle measure though. The problem doesn't give the value for Fg. And it doesn't tell me mass either so I can't even do Fg = mg.

Just do it with the variables. You'll find that you don't need to know the mass to solve for mew. :)