1. The problem statement, all variables and given/known data So I have and inclined plane at 1 degrees, and on top of it, there is an object 361grams. I gradually increase the angle of the inclined plane, and just at 20 degrees, the object starts to slide down. How do I find out the coefficient of friction? Any help would be appreciated. Thanks 2. Relevant equations 3. The attempt at a solution I only know that just before it is about to slide down, mgsin20-Ffmax=0 so do i use 19.99999 degrees to solve this equation? So i used mgsin19.999=Usmgcos19.9999 and got 1.299999N but I think its wrong.