Two plastic blocks of unequal, but known, mass (m and 2m) lie on a horizontal frictionless surface. The larger block, of known mass M, is attached to a hanging block via an ideal cord that passes over a massless pulley as shown in the figure below. Determine (a) the normal contact force Ne between the two blocks (m and 2m) and (b) the tension in the rope. NOTE: This is nof an equilibrium problem. 2m M