Okay, so here's the simple question..........I just can't seem to figure out what I am doing wrong so I won't elaborate on what I have done or not done....... At the *second an incline rises to 15 degrees, the 100kg box on it begins to slide. What is the coefficient of friction? *Note: the box does not move until the incline HITS 15 degrees, no more, no less. That is the problem verbatim. Any help would be great!!! Thank You!!!