Brass Bar (E = 110 MPa) of Length $L = 2.5 \mathrm {~m} \text { has diameter } d _ { 1 } = 18$

question 6

Multiple Choice

brass bar (E = 110 MPa) of length $L = 2.5 \mathrm {~m} \text { has diameter } d _ { 1 } = 18$ mm over one-half of its length and $\text { diameter } d _ { 2 } = 18$ mm over the other half. Compare this nonprismatic bar to a prismatic bar of the same volume of material with constant diameter d and length L. The elongation of the prismatic bar under the same load P = 25 kN is approximately:

• A) 3 mm
• B) 4 mm
• C) 5 mm
• D) 6 mm

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Definitions:

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