Problem #8 (20 points): A horizontal boom ABC is supported by a ball-and-socket joint at A and by two cables BDC and CE, as shown below. Cable BDC is continuous and passes over a small pulley at D. A crate weighing 80 lb hangs vertically from point C. Coordinates for the points are: A=(0, 0, 0); B = (0, 4, 0); C = (0, 12, 0); D = (-3, 0, 4); and E = (3, 0, 6) ft. Find: E 3 ft (a) The forces in cables BDC and CE. (b) The reactions at A. 6 ft A B ft 8 ft 4 ft

Problem #8 (20 points): A horizontal boom ABC is supported by a ball-and-socket joint at A and by two cables BDC and CE, as shown below. Cable BDC is continuous and passes over a small pulley at D. A crate weighing 80 lb hangs vertically from point C. Coordinates for the points are: A=(0, 0, 0); B = (0, 4, 0); C = (0, 12, 0); D = (-3, 0, 4); and E = (3, 0, 6) ft. Find: E 3 ft (a) The forces in cables BDC and CE. (b) The reactions at A. 6 ft A B ft 8 ft 4 ft

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter5: Three-dimensional Equilibrium

Section: Chapter Questions

Problem 5.3P: The space truss ABCD in the shape of a tetrahedron is suspended from three vertical links. Assuming...

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