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  1. 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.

    2. A.
    WI/AE + PI/AE
    B.
    WI/2AE + PI/AE
    C.
    WI/2AE + PI/2AE
    D.
    WI/AE + PI/2AE

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    Answer : Option B

    Explanation :

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