- #1
JoshuaR
- 26
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Homework Statement
This is the diagram of the question. There are 3 wooden beams nailed together and supported at A,D, and F. Assuming only vertical forces, what are the vertical reactions at A, D, and F?
The solution uses this diagram to make three basic equations:
(1) for BEF, F=2/3(P+E)=2B
(2) for ECD, D=2/3C=2E
(3) for ABC, A=2/3B=2C
For (2), why is it D=2/3C=2E and not D=2/3C=2(P+E)?
Why doesn't P come into the equation? Isn't it acting at point E? I understand the solution completely except for this one point. Thank you.
Using algebra I can get the solution of D=1/13P, F=9/13P, A=3/13P
But only if D=2E rather than D=2(P+E)