1. The problem statement, all variables and given/known data say a fridge of width "w" and height "L" is being pushed on by a force F at an angle θ to the horizontal. This force is applied at a height of "h" above the ground. I want to know what the max value of h can be such that the fridge doesn't tip and the coefficient of static friction is μ. 2. Relevant equations ΣF = 0 Στ = 0 3. The attempt at a solution The force can be found: ΣFx = 0 Fcosθ - f = 0, where f(max) = μN And ΣFy = 0 N - mg - Fsinθ = 0 So Fcosθ - μ(mg + Fsinθ) = 0 F = μmg/(cosθ - μsinθ) This is my reasoning for the height, since only the horizontal component of F affects the perpendicular distance "h" to F, then: Στ = 0 (about axis where the fridge is about to tip) hFcosθ - mg(w/2) = 0 h = ½mgw/(Fcosθ) Does that make sense? I'm skeptical about this.