4.20 A designer is trying to decide whether to use a circular or square single cell...

4.20 A designer is trying to decide whether to use a circular or square single cell bar to carry a torsion load. The wall thickness must be the same for both designs. The weight must be the same regardless of the choice.

Based on the thin-wall theory, which is the better choice?

r = radius of circular cross-section

2w = width of square cross-section

Use thin-wall approximations for the cross-sectional areas.

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Expert Solution

genius_generous answered 1 year ago

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