1. The problem statement, all variables and given/known data A small crane is lifting a 10kg box of nails. If the coefficient of static friction is .4, calculate the angle at which the box begins to slide. 2. Relevant equations Fg x component: mg sin Ff = ukmgcos 3. The attempt at a solution Fnet = Fgx - Ff Would the net force be zero since there's no acceleration in its static state? Do I then rearrange the equation to solve for the angle?