Steel Rod

MECHANICAL ENGINEERING PROBLEMS:
1. A steel rod 30mm & 800mm long has an allowance elongation not to exceed 1.5 mm, find the allowable load in KN?

Solution:

Properties of steel;
E = 30,000,000 psi or 20,758,714 kPa

Formula;

Y= FL/AE

where:
Y=elongation
F=load
A= cross-sectional area

thus,


F = 274 kN          answer

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