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MAE 2103 – Engineering Mechanics I Practice Exam 2 1. The Howe truss is subjected to the loading shown. Identify any zero-force members. Then determine the force in members GF and CD using the method of sections, and state if the members are in tension or compression. 2. For the simple truss pictured to the right, P=Ax=400 lb and B=Ay=300 lb. Using the method of joints, find the internal force in diagonal member BC, and whether it is in tension or compression. 3. Determine the reactions at A and B when alpha is 45o. R. Gist 1 of 2 Ver. B, Rev. 1 MAE 2103 – Engineering Mechanics I Practice Exam 2 4. Determine support reactions at A, B, and C. 5. Find the x and y coordinates of the centroid of the area shown. (Table of common areas will be provided.) 6. A 15-mm diameter hole is drilled in a piece of a 20-mm thick steel. The hole is then countersunk as shown. Determine the volume of the steel removed during this entire process. R. Gist 2 of 2 Ver. B, Rev. 1