. Applied calculus; principles and applications . 354 INTEGRAL CALCULUS Example 4. — Find the moment of inertia of the sectionshown. 3 = ^ (6)^ - ^ - T (2)^ (3)^ + ^ = (ins.)*.J = h + Iy = (ins.)*.. Example 5. — Find the moment of inertia of the trapezoid:(a) about its lower base; (b) about the gravity axis. ix ^on -t^2^fi 4 ^ 12 = 216 + 144 = 360 (ins.)^.Ig = Ix- Aa = 360 - 36 (f)2 = 104 (ins.)*.

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