<p>Im self studying physics B but i have no idea how to find the coefficient of friction, say on an inclined plane problem. I know that Ff=Fn+mu but how do i determine it when mu or Ff is not given?</p>
<p>if its on the incline, you find the angle, and you find the force weight. use trigonometry to find the parallel (thats your force ffriction) and the perpendicular (your normal force).</p>