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Moment of inertia of a circular section about an axis perpendicular to the section is

A. $$\frac{{\pi {{\text{d}}^3}}}{{16}}$$

B. $$\frac{{\pi {{\text{d}}^3}}}{{32}}$$

C. $$\frac{{\pi {{\text{d}}^4}}}{{32}}$$

D. $$\frac{{\pi {{\text{d}}^4}}}{{64}}$$

Answer: Option C

Solution(By Examveda Team)

Moment of inertia for a circular section about an axis perpendicular to the section is given by $$\frac{{\pi {{\text{d}}^4}}}{{32}}$$, where d is the diameter of the circle. Therefore, the correct answer is Option C.

This Question Belongs to Mechanical Engineering >> Engineering Mechanics

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Comments ( 10 )

  1. Shaikh Salman
    Shaikh Salman :
    6 months ago

    D right answer

  2. Ashok Oraon
    Ashok Oraon :
    2 years ago

    Axis perpendicular means (Izz) polar moment of inertia

  3. Saurav Saha
    Saurav Saha :
    3 years ago

    Answer is A

  4. Saddam Ali
    Saddam Ali :
    3 years ago

    Polar moment of interia..

  5. Atul Gupta
    Atul Gupta :
    3 years ago

    Iyy is also perpendicular..then why D is not correct

  6. BK Ajit
    BK Ajit :
    4 years ago

    We have to use perpendicular axis theorem, that give (M.O.I)zz=(M.O.I)xx + (M.O.I)yy from that we get option (c) is correct

  7. BK Ajit
    BK Ajit :
    4 years ago

    We have to use perpendicular axis theorem, that give (M.O.I)zz=(M.O.I)xx + (M.O.I)yy from that we get option (c) is correct

  8. BK Ajit
    BK Ajit :
    4 years ago

    We have to use perpendicular axis theorem, that give (M.O.I)zz=(M.O.I)xx + (M.O.I)yy from that we get option (c) is correct

  9. Ehsan Ahmad
    Ehsan Ahmad :
    4 years ago

    Ny body explain it

  10. Asif Ahamed
    Asif Ahamed :
    4 years ago

    Answer D

Related Questions on Engineering Mechanics

If a number of forces are acting at a point, their resultant is given by

A. $${\left( {\sum {\text{V}} } \right)^2} + {\left( {\sum {\text{H}} } \right)^2}$$

B. $$\sqrt {{{\left( {\sum {\text{V}} } \right)}^2} + {{\left( {\sum {\text{H}} } \right)}^2}} $$

C. $${\left( {\sum {\text{V}} } \right)^2} + {\left( {\sum {\text{H}} } \right)^2} + 2\left( {\sum {\text{V}} } \right)\left( {\sum {\text{H}} } \right)$$

D. $$\sqrt {{{\left( {\sum {\text{V}} } \right)}^2} + {{\left( {\sum {\text{H}} } \right)}^2} + 2\left( {\sum {\text{V}} } \right)\left( {\sum {\text{H}} } \right)} $$