Question: The figure shows a calculation model for a bracket supporting a wooden shelf. The rods in the bracket should have a square cross - section,

The figure shows a calculation model for a bracket supporting a wooden shelf. The rods in the bracket should have a square cross-section, and all rods should have the same dimensions. Determine the minimum possible dimension if the compressive stress in the wood must not exceed 21 MPa and the tensile stress must not exceed 14 MPa.
The figure shows a calculation model for a

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