A uniform ladder of mass mL = 12.3 kg and length L = 3.80 m is leaned against a frictionless wall at an angle of θ = 23.4∘, as shown in Figure 2. A human, of mass mh = 83.8 kg, stands a distance d = 1.10 m up the ladder as shown. What is the minimum coefficient of static friction between the ladder and the ground that will prevent the ladder from slipping?