Solving 3D Statics Moment & Normal Force Problems

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    3d Moment Statics
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To find the reaction forces at points C, B, and A using the vector method, the user initially attempted the equation rac X C + rab X B - rad X F. The expected results are Nb=Na=0.367F and Nc=0.265, which were confirmed through a more traditional approach of summing forces and moments in 2D. The user expressed difficulty with an attachment that did not upload properly. Other forum members suggested posting the user's calculations for further assistance. The discussion emphasizes the importance of correctly applying vector methods in solving 3D statics problems.
mrmotobiker
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hi all, I'm new to this forum and have read through a lot of the topics. i also tried searching the previous problems, but haven't found anything yet.

anyways, here's my question:

how do i find the reaction (normal) forces on points C, B, and A? I'm trying to do this with the vector method which i originally thought is supposed to be
rac X C + rab X B - rad X F.

the answer is supposed to be Nb=Na=.367F and Nc=.265 and which is what i got doing it the long and painful way of summing all forces and finding moments in 2d first.

thanks.
 

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The attachment doesn't seem to work (or is it just me?).
 
radou said:
The attachment doesn't seem to work (or is it just me?).

It hasn't been approved, yet... *waiting for a mentor* :smile:
 
You can do it vectorially, just make sure, you're doing it well. Maybe you can post your attempt.
 

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