98_Problem CHAPTER 9

98_Problem CHAPTER 9 - PROBLEM 9.83 Determine the moments...

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PROBLEM 9.83 Determine the moments of inertia and the product of inertia of the L76 × 51 × 6.4-mm angle cross section of Problem 9.74 with respect to new centroidal axes obtained by rotating the x and y axes through o 45 clockwise. SOLUTION From Problem 9.74 64 0.1596 10 mm xy I =− × From Figure 9.13 0.166 x I 0.453 y I Now () 1 0.3095 2 xy II += × 1 0.1453 2 −= × Using Equations (9.18), (9.19), and (9.20)
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