PROBLEM 9.47 Determine the polar moment of inertia of the area shown with respect to (a) point O, (b) the centroid of the area. SOLUTION 2,mmAy3yA1 ()212022 619.52=π50.9296 61.152010×2 ()1240 9010 8002−=−30 60.32410−×Σ11 819.5 60.82810×Now 6320.82810 mm70.054 mm11819.5 mmAYYAΣ×===Σ(a)( )12OOOJJJ=−where 4641120 mm162.86
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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.