= 200 GPa.
Prob. 3.4-1. The two-segment steel rod in Fig. P3.4-1 has a
circular cross section with diameter di = 15 mm over one-
half of its length, and diameter d₂ 10 mm over the other
half. The modulus of elasticity of the steel is E
(a) How much will the rod elongate under the tensile load of
P =
20 kN? (b) If the same volume of material were to be
made into a rod of constant diameter and the same 2-m
length, what would be the elongation of this rod under the
same load P?
d₁= 15mm
(1)
1.0m
d₂= 10mm
(2)
1.0m
P3.4-1 and P11.7-5
P= 20KN