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Raft with three cars

A square uniform raft, 18.4m by 18.4m, of mass 6243kg, is used as a ferryboat. If three cars, each of mass 1110kg, occupy the NE, SE, and SW corners, determine the CM of the loaded ferryboat. Use east as the positive x-axis, north as the positive y-axis and the centre of the raft as the origin.

x coordinate=?

y coordinate=?

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I think
x= 1.06
y= -1.06

am I right

Helpful (1) Fun Thanks for voting Comments (4)
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yea thanks...how did you get it please
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I will update the solution in gdrive and send you the link by evening..
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hey I am sorry.. I think in hurry I've calculate using board weight 624 instead of 6243. I will calculate again and share with you.
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hi
correct answer is in the following sheet shared on gdrive by me. You can download the answer by clicking the following link
https://docs.google.com/uc?export=download&id=0Bxxluya0NKB2NHl3YXRKeFNhQ0E
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