Engineering An issue with these two curved beam homework problems

AI Thread Summary
The discussion centers on difficulties encountered with two homework problems involving curved beams, specifically in calculating stress at points A and B. The user notes that their results for point A in the first problem are close to the teacher's, but point B shows significant discrepancies. In the second problem, while the user is close to the teacher's results, there are still noticeable differences. Clarifications reveal that the first problem lacks a load, which affects the calculations, while the second problem has a specified load of 5 kN. The user seeks assistance in understanding where their calculations may be going wrong.
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Homework Statement
Curved beams
Relevant Equations
P/A-M(R-rA)/ArAe
Hi, good evening/morning/night!

I have a problem with this 2 homework problems about curved beams.

In both I must calculate the stress at points A and B.

My procedure is correct, but for some reason in:

First problem - the effort in A is very close to that of the teacher, but the effort in B is very different.

C3.png


Second problem - In both efforts I am close to the teacher's results, but they are quite different.

R.png

I don't think I'm too far away, but I must be doing something wrong somewhere and I can't figure out where.

I would greatly appreciate your help.
 

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The pictures of your calculations are barely visible.
Could you please recreate the text of both problems?
I can’t see any load on the second one.
Sorry
 
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Lnewqban said:
The pictures of your calculations are barely visible.
Could you please recreate the text of both problems?
I can’t see any load on the second one.
Sorry
I am very sorry, they have already been corrected in the main text.

In the first problem it does not have a load, so the "P/A" is omitted from the formula.
In the second it is 5KN the load
 

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