252_Problem CHAPTER 9

252_Problem CHAPTER 9 - PROBLEM 9.174 For the wire figure...

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PROBLEM 9.174 For the wire figure of the problem indicated, determine the mass moment of inertia of the figure with respect to the axis through the origin characterized by the unit vector ( ) 362/ 7 . =− − + ijk λ Problem 9.148 SOLUTION First compute the mass of each component. Have ( ) / mm L L = ( ) 0.049 kg/m L = Then ( )( ) 1 0.049 kg/m 2 0.32 m m π 0.09852 kg = ( )( ) 2345 0.049 kg 0.160 m mmmm ==== 0.00784 kg = Now observe that 0 xy yz zx III ′′ = == for each component. Also, 145 1 123
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