95_Problem CHAPTER 9

95_Problem CHAPTER 9 - PROBLEM 9.81 CONTINUED Now, from...

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PROBLEM 9.81 CONTINUED Now, from Equations 9.18, 9.19, and 9.20 Equation 9.18: () 11 cos2 sin 2 22 xx y x y x y II I I I I θ =+ +− 66 6 4 77.76 10 25.92 10 cos 60 138.24 10 sin 60 mm ππ  × ° × °  64 323.29 10 mm or 323 x I W Equation 9.19: sin 2 yx y x y I I −− + 6 4 77.76 10 25.92 10 cos 60 138.24 10 sin 60 mm = × + × −°+ × −° 165.29 or 165.29 y I W Equation 9.20: 1 sin2 2 xy x y I I ′′ =− + 4 25.92
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