# Dynamics Slide

1. Feb 22, 2009

### Shatzkinator

1. The problem statement, all variables and given/known data
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?

2. Relevant equations
fs = Mk * Fn

3. The attempt at a solution
I'm not quite sure how to tackle this one =(

2. Feb 22, 2009

### Hootenanny

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

3. Feb 22, 2009

### LowlyPion

Perhaps examine the kinematic relationship between time distance and acceleration?

x = 1/2*a*t2

4. Feb 22, 2009

### Shatzkinator

I dont 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.

5. Feb 22, 2009

### Hootenanny

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

6. Feb 22, 2009

### Shatzkinator

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

7. Feb 22, 2009

### Shatzkinator

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

8. Feb 22, 2009

### LowlyPion

That's what I get.

3/4*tan35