As elastic bar of length 'l', cross-sectional area A, Young's modulus of elasticity E and self-weight W is hanging vertically. It is subjected to a load P applied axially at the bottom end. The total elongation of the bar is given by.-A-WI/AE + PI/AEB-WI/2AE + PI/AEC-WI/2AE + PI/2AED-WI/AE + PI/2AE-B-WI/2AE + PI/AE

Question

As elastic bar of length &#39;l&#39;, cross-sectional area A, Young&#39;s modulus of elasticity E and self-weight W is hanging vertically. It is subjected to a load P applied axially at the bottom end. The total elongation of the bar is given by.-A-WI/AE + PI/AEB-WI/2AE + PI/AEC-WI/2AE + PI/2AED-WI/AE + PI/2AE-B-WI/2AE + PI/AE

APTITUDE CRACK · Accepted Answer

B WI/2AE + PI/AE Elongation due to selfweight= wl^2/E. Elongation due to axial=pl/AE.

UPSC Civil Service Exam Questions - Engineering

As elastic bar of length 'l', cross-sectional area A, Young's modulus of elasticity E and self-weight W is hanging vertically. It is subjected to a load P applied axially at the bottom end. The total elongation of the bar is given by.

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UPSC Civil Service Exam Questions - Engineering

As elastic bar of length 'l', cross-sectional area A, Young's modulus of elasticity E and self-weight W is hanging vertically. It is subjected to a load P applied axially at the bottom end. The total elongation of the bar is given by.

Solution

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