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A 20-mm-diameter steel rod of Sy = 350 MPa is loaded as a column with pinned ends. If sufficiently short, it can carry a limiting load of Sy A = 110 kN. How long can the rod be and still carry the following percentages of this 110 kN load: (a) 90%, (b) 50%, (c) 10%, (d) 2%?

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