Problem 1. Determine length CE for the similar triangles shown in Figure 1. E 25 m C D A 10 m 16 m B FIGURE 1 Problem 10 Determine the moment of inertia about the x-axis of the area shown in Figures 10. 160 mm 400 mm Problem 2 Calculate the moment about point A shown in Figure 2. 400 N 100 N A 3 2.5m 200 N 3.5 m 1.5m Problem 3. Draw a free-body diagram of member AG shown in Figure 3. Do not calculate values but label all forces acting on DE as horizontal and vertical components. 3 m 2 m H G A B E D 3 KN 1 m 1.5 m Determine the load in member AB of the pin-connected truss shown in Figure 4. 3 m 3 m 1 m B 4 m A 2 m 8 15 68 kN E Problem 5. Using the method of sections, determine the loads in members BD, CD, and CE of the truss shown in Figure 5. 2' 2.5' 3' -3' B E 2.5 kips 6' 2.5 1 kip F Problem 6 Determine the magnitude and location of the resultant of the force systems shown in Figure 6. 5N4 1 4m mm Z FIGURE 6 20 N 10 N x 0.5m 2m Problem 7 A horizontal force of 40 N is required to start a 15-kg block sliding along a horizontal surface. What is the coefficient of static friction? Determine the force T that will produce impending motion upward of the 300-lb weight in Figure 8. (Assume a coefficient of friction of 0.25.) Also, find the minimum force T required to hold the 300-lb weight. 300 lb Problem 9 Determine for the area shown in Figure 9. y 1" 1" .5" 1" 2" 2" X