1. The problem statement, all variables and given/known data I've uploaded an image of the problem below. The problem states: Determine the value of P which will cause the homogeneous cylinder to begin to roll up out of its rectangular recess.The mass of the cylinder is m, the mass of the cart is M. Friction of the cart wheels i negligible. 2. Relevant equations ΣF_x = ma_x ΣF_y = ma_y ΣM_G = 0 3. The attempt at a solution I'm really not sure how to approach the cylinder in this problem, but I can see that a FBD of the problem shows m*g and M*g going downward in the y-direction, and P is in the x-direction. I'm also assuming the cart is accelerating in the x-direction, which means a_y = 0. The correct answer is P = sqrt(3)(M+m)(g). I'm obviously missing some key force because I keep getting P =0.