11th Class Physics Mechanical Properties of Solids / ठोसों के यांत्रिक गुण Question Bank Mechanical Properties of Solids Conceptual Problems

  • question_answer
    Why is the longer side of cross-section of girder used as depth?

    Answer:

                    Depression, \[\delta =\frac{W{{L}^{3}}}{4b{{d}^{3}}}\] Clearly, the depression of the girder will be small when depth d is large, because \[\delta \propto {{d}^{-3}}\].


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