2.Two blocks are stacked on top of each other as shown in the diagram.The mass of the top block is m, and the mass of the bottom block is M.The

bottom block is a ramp that is at an angle of - above the horizontal.There is no friction between the two blocks, but there is friction between the bottom block and the ground. The coefficient of friction between the bottom block and the ground is µ. The bottom block is pushed horizontally causing everything to accelerate to the right. Find an expression for the magnitude of the horizontal force that will prevent the top block from sliding up or down the ramp. (Your answer can contain m,М, д,and u)