# Find the friction force impeding its motion

1. Sep 21, 2009

### kwehner

1. The problem statement, all variables and given/known data
A 13.0 box is released on a 32 incline and accelerates down the incline at 0.10 .

a) Find the friction force impeding its motion.
b)What is the coefficient of kinetic friction?

2. Relevant equations

3. The attempt at a solution

2. Sep 21, 2009

### semc

Re: Friction

Hey man include the units for your numbers. You should draw the free body diagram and resolve the forces acting on the box into the x and y component so you can find the frictional force. Use uN to find the coefficient of kinetic friction.

3. Sep 21, 2009

### harvellt

Re: Friction

mmm force diagram and even a $$\mu$$ could help