What formula determines strength condition for axial loading of a rod made of ductile material? (σ is actual normal stress in a rod, σA is allowable normal stress, τ is actual shear stress in a rod, τA is allowable shear stress)
- max I σ I ≤ σ A
- max I σ I ≥ σ A
- max I τ I ≤ τ A
- max I τ I ≥ τ A
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