# GE310HW#4 - GE 310, Fall 2009 Homework Set 4 Due 11 AM...

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GE 310, Fall 2009 Homework Set 4 Due 11 AM Sept. 30, 2009 Sign the student code of conduct on the first page of your homework document by writing "I honor the student code of conduct." Copying others' work is strictly prohibited, although discussion is fine. Graders noticed some irregularities in homework # 2. If we notice irregularities again, disciplinary actions will follow. Refer to the handout on DIMENSIONS AND PROPERTIES of structural shapes. THESE PROBLEMS DO NOT REQUIRE THE DETAILED GEOMETRIC CALCULATION THAT YOU DID LAST WEEK. 1. In the AISC standard sections EXCEL spreadsheet, find the listing for a L 4 x 3.5 x 6.2 (lb/ft) angle section. Using the data given in the spreadsheet, your knowledge of invariants, and the definition(s) of moment of inertia, and radius of gyration: a. Determine the location of the centroid of the area relative to the outside corner of the section. (5 points) b. Determine the product of inertia (I xy ) about an x-y set of axes with the centroid as the origin. (10 points)

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## This note was uploaded on 08/31/2010 for the course IESE GE 310 taught by Professor Kim during the Fall '09 term at University of Illinois at Urbana–Champaign.

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GE310HW#4 - GE 310, Fall 2009 Homework Set 4 Due 11 AM...

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