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2003 Exam 2 - GNG 1100 ENGINEERING MECHANICS Final...

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GNG 1100 - ENGINEERING MECHANICS Final Examination Time: 3 hours 20 December 2003 Page 1 of 3 Profs. Droste, Hallett, and Skaff Closed Book. Non-programmable calculators only allowed. Free-body diagrams must be drawn wherever appropriate. Marks will be deducted for missing or incorrect free-body diagrams. 1. (6 marks) Determine the x and y coordinates of the centroid of the steel plate shown in the sketch. The location of the centroid of a triangle is shown in the diagram below. 2. . The truss shown is loaded by a force P = 16 kN. All joints are frictionless pins. (a) (9 marks) Using the method of sections, determine the forces in members FG, EG and CH. Specifiy whether each is in compression or tension. Do not use the method of joints - a method of joints solution will receive a mark of zero (0). (b) (1 marks) Identify all zero-force members in the left hand half of the truss.
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GNG 1100 - ENGINEERING MECHANICS Final Examination Time: 3 hours 20 December 2003 Page 2 of 3 Profs. Droste, Hallett, and Skaff 3.
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