The two wedges are stacked as shown in figure 1. a.) What is the total reaction at the wall if the coefficient of friction between AB is 0.1 b.) The coefficient of friction between AC and BD is 0.2....

The two wedges are stacked as shown in figure 1.

a.) What is the total reaction at the wall if the coefficient of friction between AB is 0.1

b.) The coefficient of friction between AC and BD is 0.2.

c.) How many contact surfaces in the Figure?

d.) What is the angle of friction at AC in the figure?