PROBLEM 9.40 Determine the centroidal polar moment of inertia CJof the 3210 10 mm×shaded area knowing that the polar moments of inertia of the area with respect to points A, B, and Dare 6445 10 mmAJ=×, 130 10mmBJ, and 252 10 mmDJ, respectively. SOLUTION Have 222whereACCACAJJAdda=+=Then 2ACa(1) Have 22whereBCCBCBddadThen ( )BCad+(2) Have 22where4DCCDCDddad=+Then ( )4ad+(3) Then Equation (3)Equation(2):−23DB
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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.