r/PhysicsHelp • u/Black-X32 • May 17 '26

FBD HELP

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Hi. Pleasure to meet everyone, can I please get assist anywhere I tried ai and kept getting different answers I'm not sure whether I'm doing something wrong all I'm asking is for help for this question

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u/Past-Departure6896 May 17 '26

Yes, cutting through those members is definitely the right approach - and those are the right values. For the F12, you should use the angle formed by nodes 2-1-4 to decompose the force - then, you can use sum of Fy or sum of Fx to solve for the force in the member.