The elongation of a rod due to its own self-weight is half of what it would be if the same total weight were applied as a concentrated load at the end, and it is proportional to the length, inversely proportional to the cross-sectional area and Young's modulus.
A cylindrical rod of length, l and diameter, d, is rigidly fixed at its upper end and hangs vertically. The elongation produced in the rod due to its total self weight, W is: - (5) Question not attempted Where A is area of cross-section of cylindrical rod and E is modulus of elasticity.
Asked in Assistant Eng. (Mechanical) Competitive Examination, 2023 · Topic: Mechanics (Elasticity (Stress, Strain, Hooke's Law, Elastic Moduli))
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