226_Problem CHAPTER 9

226_Problem CHAPTER 9 - PROBLEM 9.159 Brass wire with a...

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PROBLEM 9.159 Brass wire with a weight per unit length w is used to form the figure shown. Determine the products of inertia , xy I , yz I and zx I of the wire figure. SOLUTION First compute the mass of each component. Have 1 W mw L gg == Then. . 1 33 22 ww ma a g g ππ  =   () 2 a g g 3 a g g = Now observe that the centroidal products of inertia, ,, x yy z I I ′′ and , zx I ′ ′ of each component are zero because
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