PROBLEM 9.87 For the area indicated, determine the orientation of the principal axes at the origin and the corresponding values of the moments of inertia. Area of Problem 9.73 SOLUTION From Problems 9.73 and 9.81 6451.8410 mmxIπ=×103.68yI138.24xyIEquation (9.25): ( )6662138.24 102tan 251.8410103.6810xymxyIIIθππ×=−−×−×1.69765=259.500 and 239.500m=°°or 29.7 and 119.7m=°°WThen ()22max, min122xyxyII−=+±+
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This note was uploaded on 07/11/2011 for the course EGM 2511 taught by Professor Jenkins during the Spring '08 term at University of Florida.