The centroidal polar moment of inertia a J C of the 15.5 10 3 mm 2 shaded

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The centroidal polar moment of inertia a JC of the 15.5 ×10mm2 shaded region is 250 ×10mm4. Determine the polar moments of inertia JB and JD of the shaded region knowing that J= 2JB and d = 100 mm.


2a

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