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  3. problem 2 a steel cantilever beam with hollow rectangle crosssec...

Question: problem 2 a steel cantilever beam with hollow rectangle crosssec...

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Problem 2. A steel cantilever beam with hollow rectangle cross-sec tion with length, L = 120 mm, height H-70± 0.75 mm, wall thickness-t= 10 ± mm, inner height = h = 50 ± 0.25 mm, is loaded with 0.50 min, inner width-b-30 ± 0.20 the load, F-350 ± 3.5 N at the free end as shown in the figure (a) Find the normal stress with uncertainty (15 points) b) which variable contributes the most to the overall uncertain y? (5 points) (See the hint # 2 in problem # 1) Aカ Section A-A 10 mm 10 mm- 50 mm Hint 1: MC -: М-С Normal stress, σ Moment, M-L*F Centroid, c- Moment of Inertia, I BH3 bh3 -피 Hint 2: : n*X(n-1) ах
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