The gantry structure is used to test the response of an airplane during a clash. The plane of mass 8-Mg is hoisted back until 0= 60°, and then pull- back cable AC is released when the plane is at rest. Determine the speed of the plane just before clashing into the ground, 0= 15°. Also, what is the maximum tension developed in the supporting cable during the motion?

3-19. Determine the unstretched length of DB to hold the 40-kg crate in the position shown. Take k = 180 N/m. -2 m- -3 m 02 110941 oier 2 m wwww D A Probs. 3-18/19

6-50. The assembly is made from a steel hemisphere, Pst 7.80 Mg/m³, and an aluminum cylinder, Pal 2.70 Mg/m³. Determine the center of gravity of the assembly if the height of the cylinder is h = 200 mm. = = X IN 80 mm Z h 160 mm Probs. 6-50/51

5-48 Locate the centroid of the slender rod shown in Fig. P5-48. 200 mm 200 mm *"200 mm