50_Problem CHAPTER 9

50_Problem CHAPTER 9 - PROBLEM 9.48 CONTINUED (a) Now where...

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PROBLEM 9.48 CONTINUED ( a ) Now Oxy JI I = + where ( ) ( ) ( ) 123 x xx x I III =+− () ( ) 3 64 1 1 400 mm 57.5 mm 25.3479 10 mm 3 x I == × 3 2 1 300 mm 240 mm 345.6000 10 mm 12 x I × 3 3 1 150 mm 120 mm 21.6000 10 mm 12 x I × Then ( ) 25.3479 345.6000 21.6000 10 mm x I =+−× 349.348 10 mm Also ( ) ( ) ( ) yy y y I where ( ) ( ) 32 2 1 1 57.5 mm 400 mm 23 000 mm 100 mm 12 y I =+ ( ) 306.6667 230.0000 10 mm 536.6667 10 mm =+× = × 3 2 1 240 mm 300 mm 540.0000 10 mm 12 y I × 3 3 1 150 mm 120 mm 33.7500 10 mm 12 y I × Then ( ) 536.6667 540 33.75 10 mm 1042.917 10 mm y I × = × Finally, ( ) 349.348 1042.917 10 mm 1392.265 10 mm O J ×=×
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