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JEE Main & Advanced Physics Wave Mechanics Question Bank Self Evaluation Test - Mechanical Properties of Solids

  • question_answer
    A steel wire of cross-sectional area \[3\times {{10}^{-6}}{{m}^{2}}\] can with stand a maximum strain of\[{{10}^{-3}}\]. Young's modulus of steel is\[2\times {{10}^{11}}N/{{m}^{2}}\]. The maximum mass the wire can hold is:

    A) 40kg

    B) 60kg

    C) 80kg

    D) 100kg

    Correct Answer: D

    Solution :

    [d] \[m=\frac{Y\times strain\times A}{2}\] \[=\frac{2\times {{10}^{11}}\times {{10}^{-3}}\times 3\times {{10}^{-6}}}{2}=100kg\]


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