(Solved): Assuming the densities below, the same applied load, the same number of cycles, and a \( 100 \math ...

Assuming the densities below, the same applied load, the same number of cycles, and a \( 100 \mathrm{~mm} \) Iong bar, would you be able to use either a 1045 or 4340 steel bar in place of the magnesium bar and keep the same weight of the component? Mg density: \( 1.74 \mathrm{~g} / \mathrm{cm}^{3} \) Fe density: \( 7.87 \mathrm{~g} / \mathrm{cm}^{3} \) just the 1045 just the 4340 neither the 1045 or the 4340 both the 1045 and the 4340