Solving the Coefficient of Kinetic Friction for a Sliding Pig

[Shatzkinator]

Homework Statement

A slide-loving pig slides down a certain 35 degree slide in twice the time it would take to slide down a frictionless 35 degree slide. What is the coefficient of kinetic friction between the pig and the slide?

Homework Equations

fs = Mk * Fn

The Attempt at a Solution

I'm not quite sure how to tackle this one =(

 

[Hootenanny]

HINT: Find the component of the net force that acts parallel to the incline.

 

[LowlyPion]

Perhaps examine the kinematic relationship between time distance and acceleration?

x = 1/2*a*t²

 

[Shatzkinator]

HINT: Find the component of the net force that acts parallel to the incline.

I don't understand how to do it, I'm only given the 35 degree angle. Also the answer isn't given in the back of the book so I couldn't know if I did it right even if I did have te correct procedure.

 

[Hootenanny]

I don't understand how to do it, I'm only given the 35 degree angle.

Okay. I suggest you start by drawing a free body diagram, labelling all the forces.

 

[Shatzkinator]

Okay. I suggest you start by drawing a free body diagram, labelling all the forces.

I have tried this... I still don't know what to do. Can you please show me the solution?

 

[Shatzkinator]

I got 0.53 as my Mk.. please let me know if this is right.

 

[LowlyPion]

That's what I get.

3/4*tan35