It's that time of the year again when Brian loves to decorate his house by hanging up festive Christmas lights. To hang up his lights, he leans the top of a 5.2-m ladder against the side of his house; the bottom of the ladder is 1.8 m away from the house. Suppose the CM of the ladder is located 2.2 m from the base of the ladder, as measured along its length. Brian is standing 3.5 m from the base of the ladder, also measured along its length. The mass of the ladder is 12.0 kg and Brian's mass is 81.2 kg. Note: Use g = 9.8 m/s2. If friction at the top of the ladder is ignored, determine the normal force at the bottom of the ladder.If friction at the top of the ladder is ignored, determine the force of friction at the bottom of the ladder