For the force system shown in Figure 1: (a) Draw a diagram of the force system [3 points] (b) Find the unit vector AB [8 points] (c) Find the resultant force vector R of the three forces. Express the vector R in Cartesian form [10 points] (d) Is there a moment about point A? [2 points] (A yes or no answer is all that is needed. You may justify your answer if you like) (e) Is there a moment about point B? [2 points] (A yes or no answer is all that is needed. You may justify your answer if you like) y I F = 500 N 3 4 0.2 m 0.4 m F = 600 N 35 F3 = 800 N 0.1 m B 0.3 m Figure 1