A ladder of length l=12 m and mass m=45 kg lean against a wall (no friction between the wall and the ladder). The ladders upper end is at height h= 9.3 m above the pavement and which the lower end is supported (the pavement is not frictionless). The ladder’s center of mass is L/3 from the lower end along the lengthy of the ladder. A fire fighter of mass M=72 kg climb the ladder until her center of mass is L/2 from the lower end. What are the magnitude of the forces on the ladder from the wall and the pavement?