79_Problem CHAPTER 9

79_Problem CHAPTER 9 - PROBLEM 9.69 Determine by direct...

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PROBLEM 9.69 Determine by direct integration the product of inertia of the given area with respect to the x and y axes. SOLUTION First note that h yx b =− Now EL EL xy x y dI dI x y dA ′′ =+ where ( ) 0s y m m e t r y xy dI = EL EL 11 22 h x y x b == = h dA ydx xdx b Then 0 1 2 xy xy b hh
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