ENGR-2050 E.M. - Statics Name Date Exam 2: Problem 1 Given: Determine the location (x,y) of the center of gravity for the concrete gravity wall shown. Show the sub areas clearly in the 8 ft drawing at left and include units. Required: x=? y=? Solution: 32 ft 3 ft 4 ft 19 ft 4 ft ANSWERS ENGR-2050 E.M. - Statics Name Date Exam 2: Problem 2 Given: Derive a generic equation for the location of the centroid x, in terms of values a and h, for the area shown. Clearly show how to set up the problem using integral calculus and perform the calculus derivation by hand. Required: x=? Solution: ANSWERS ENGR-2050 E.M. - Statics Name Date Exam 2: Problem 3 Given: Determine the internal forces in the indicated members of the truss shown. Use the method of joints and do joints A, B, C in order. Required: FAB = ? (T or C) FAC = ? (T or C) FBC = ? (T or C) FBD = ? (T or C) FCD = ? (T or C) FCE = ? (T or C) Solution: Joint A Joint B Joint C ANSWERS ENGR-2050 E.M. - Statics Name Date Exam 2: Problem 4 Given: Determine IX and kX for the composite area shown. Required: 0.80 in IX = ? kX = ? Solution: 7.2 in 0.80 in 5.0 in ANSWERS ENGR-2050 E.M. - Statics Name Date Exam 2: Problem 5 Given: Determine the reactions on the frame when a = 80° . Required: AX = ? AY = ? DX = ? DY = ? 3.2 kN Solution: ANSWERS
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