Statics-6.2 - Determine the force in each member of the truss.

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Question: Determine the force in each member of the truss and state if the members are in tension or compression. Set P1 = 45 kN, P2 = 30 kN.

Problem 6-2 from:

Engineering Mechanics: Statics, 14th edition
Russell C. Hibbeler

Thank you guys for watching.

Please let me know if you have any comments or suggestions and also if you have any other problem you would like to go over with.
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Thank you, thank you, thank you, so much for explaining how to do this!! My teacher only reads over the books and doesn't show us how to do these!!

catherineb
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I'm confused on how FCD is negative at joint D. Do we just ignore the direction of the "corrected" FBD then?

clairec
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I spent like an hour trying to find how to get FCB. and its just 0. LOL

kingzulu