Questión 4:For a bronze alloy, the stress at which plastic deformation begins is 275 MPa and the modulus of elasticity is 115 GPa. (6 marks – 3 marks each part)

(a) What is the maximum load that may be applied to a specimen with a cross-sectional area of 325 mm without plastic deformation? (b) If the original specimen length is 115 mm, what is the maximum length to which it may be stretched without causing plastic deformation?

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