A commercial airliner with four jet engines, each producing 78 kN of forward thrust, is in a steady, level cruise when engine number 3 suddenly fails. Determine the distance d (measured up or down on the figure) to the resultant of the three remaining engine thrust vectors. Treat this as a two-dimensional problem. The distance d is positive if above the center line of the airplane, negative if below. 78 KN 78 KN 78 KN 2 Answer:d-i ES 1 7.3 m 12.7 m 12.7 m 7.3 m m

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F1 F2 F3 A b F4 D F5 Consider the following values: - a = 25 m; b 5 m; c = 25 m; d = 5 m; F1 = 4 kN; F2 = 5 kN; F3 = 6 kN; F4 = 7 kN; F5 = 8 kN; a = 30°, 0 = 60° %3D B = 30° 1] What is the resultant moment of the five forces acting on the rod about point A? a) - 75.8 kN.m b) 32.7 kN.m c) - 14.6 kN.m d) 72.9 kN.m e) 27.1 kN.m - 66.1 kN.m 2] What is the resultant moment of the five forces acting on the rod about point B? a) - 198.8 kN.m b) 212.7 kN.m c) - 121.6 kN.m d) 98.9 kN.m e) 125.4 kN.m f) -170.2 kN.m 3] What is the resultant moment of the five forces acting on the rod about point C? a) - 96.7 kN.m b) 251.1 kN.m c) - 114.6 kN.m d) 217.9 kN.m 154.1 kN.m f)-177.7 kN.m 4] What is the resultant moment of the five forces acting on the rod about point D? a) - 198 kN.m b) 127 kN.m c) – 219 kN.m d) 369 kN.m e) 151 kN.m f) - 171 kN.m Activate V 5] What is the moment of the force F2 about point E? Go to Setting

We have 2 individuals pulling a marshmellow with ropes. The resultant force is directed along the positive x-axis. Person A is pulling at 60 degree angle. 1. Find what angle ? is if individual B is pulling twice as hard as individual A. 2. Draw the vector addition relationship between the force vectors ??, ??. Also, find FA and FB resultant force, shown using ?. Use either the parallelogram law or the triangle rule.