1. The problem statement, all variables and given/known data There is a 2-D block with height H, width W, and mass M. (H > W) A force F is applied from behind the block at a height 0.1H from the ground. If the coefficient of friction is μ, what does the force F need to be to cause the block to tip backwards? 2. Relevant equations F x r 3. The attempt at a solution I know that if the we are interested in tipping the block forwards, then we set Fxr = mgxr and solve for F. Since the question asks for when it tips backward, how do you find the solution?