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Centroid of composite area

  • Thread starter werson tan
  • Start date
  • #1
183
0

Homework Statement


As in the photos

Homework Equations




The Attempt at a Solution


my working is
(6.43x10^-3)(310+10) + (11x10^-3)(155) / (6.43x10^-3 +11x10^-3 ) = 215.8 , but the ans is 112 , what's wrong with my working ?
 

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Answers and Replies

  • #2
.Scott
Homework Helper
2,414
832
All of the Y-bars are measured from the top of the structure. So the position of the vertical I is 10.2+155
 

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