RAJASTHAN ­ PET Rajasthan PET Solved Paper-2008

  • question_answer
    In designing a beam for its use to support a load. The depression at centre is proportional to (where Y is Young's modulus)

    A)  \[{{Y}^{2}}\]              

    B)  Y

    C)  \[\frac{1}{Y}\]              

    D)  \[\frac{1}{{{Y}^{2}}}\]

    Correct Answer: C

    Solution :

     \[\delta =\frac{w{{l}^{3}}}{4Yb{{d}^{3}}}\] Or \[\delta \propto \frac{1}{Y}\]


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