Halliday, Resnick & Walker — Equilibrium and Elasticity: Problem Problem_71

A uniform cube of side length 8.0 cm rests on a horizontal floor. The coefficient of static friction between cube and floor is \( \mu \). A horizontal pull \( \vec{P} \) is applied perpendicular to one of the vertical faces of the cube, at a distance 7.0 cm above the floor on the vertical midline of the cube face. The magnitude of \( P \) is gradually increased. During that increase, for what values of \( \mu \) will the cube eventually (a) begin to slide and (b) begin to tip? (Hint: At the onset of tipping, where is the normal force located?)