Problem

In the following problem, unless otherwise noted, assume for steel that the modulus of ela...

In the following problem, unless otherwise noted, assume for steel that the modulus of elasticity is 30,000 ksi (207 × 103 MPa), the proportional limit is 48 ksi (331 MPa), and the yield stress is 50 ksi (345 MPa).

A pin-connected axially loaded compression member is made of an aluminum alloy. The proportional limit of the material is 220 MPa and the modulus of elasticity is 69.0 × 103 MPa. Calculate the lowest value of slenderness ratio for which Euler’s formula is applicable.

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