Question

An alloy bar of 1 m length has square cross-section throughout which tapered from one

end of 10 mm×10 mm to the other end 20 mm×20 mm. Find the deformation due to axial tensile

load of 30 kN. Take modulus of elasticity as 120 GPa. (b) Find the toughness of the material

from the below provided figure.

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Answer 1

A rod 150cm long and of diameter 2cm is subjected to an axial pull of 20kN. What will be the stress? Area = π/4 (20)2 = 100π mm2.

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