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 $$\frac{{\pi {{\text{d}}^4}}}{{32}}$$, whered is the diameter of the circle. Therefore, the correct answer is Option C. This Question Belongs to Mechanical Engineering >> Engineering Mechanics
D right answer
Axis perpendicular means (Izz) polar moment of inertia
Answer is A
Polar moment of interia..
Iyy is also perpendicular..then why D is not correct
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
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
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
Ny body explain it
Answer D