A uniform ladder of mass m = 40 kg and length l = 10 m is leaned against a smooth vertical wall. A person of mass M = 80 kg stands on the ladder a distance x = 7 m from the bottom, as measured along the ladder. The foot of the ladder is d = 1.2 m from the bottom of the wall. What are the force exerted by the wall and the normal reaction exerted by the floor on the ladder?