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Sample Exam for the 1st Mid-Term

# Sample Exam for the 1st Mid-Term - EM 319 Mechanics of...

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EM 319 Mechanics of Solids Fall 2011 Sample Exam for the 1 st Mid-Term Allowable time: 3 hours Closed books, notes and homework. Calculators allowed. Name: _______________________________________________ EID: ________________________________________________ TA session: Rong Jiao T 5~7pm 14165 John Mersch W 5~7pm 14170 Andrew Barnes T 6~8pm 14175 Rong Jiao W 6~8pm 14180 Given formulas: A N , E , al longitudin transverse , L , T T ,       dx x A x E x N 1 ft = 12 in Draw Free Body Diagrams explicitly.

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2 of 5 Problem 1 (25 Points) The two-bar truss ABC shown below has pin supports at points A and C, which are 2 m apart. Members AB and BC are steel bars, pin connected at joint B. The length of bar BC is 3.0 m. A sign weighing 5.4 kN is suspended from bar BC at points D and E, which are located 0.8 m and 0.4 m, respectively from the ends of the bar. a) Determine the tensile force in bar AB. b) Determine the shear force acting on the pin at C.
3 of 5 Problem 2 (25 points) The assembly consists of an A-36 steel rod CB (

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