Mechanical Engineering - Engineering Mechanics - Discussion

Discussion Forum : Engineering Mechanics - Section 1 (Q.No. 13)
13.
Moment of inertia of a circular section about an axis perpendicular to the section is
πd3/16
πd3/32
πd4/32
πd4/64
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
30 comments Page 2 of 3.

Vikash said:   8 years ago
Explain in step by step.

VINOD KUMAR said:   8 years ago
I can understand this problem. Please explain this clearly.

Edward said:   8 years ago
m.o.i of circular lamina= pi *r power4/2.
then pi/2*(d/2)power4.
then pi/32*d power4.

Sunil said:   8 years ago
I can't understand this problem can anyone help me?

Mohan said:   8 years ago
I can't understand. Can anyone help me?

Noor ahmed said:   1 decade ago
About x axis pid^4/64 similarly about why axis. Perpendicular means about z axis. Sum of two axes (perpendicular axes theorem).

Anuraag said:   9 years ago
But, the moment of inertia has "M". Where is it?

I= MK^2. Where is M?

NITISH KUMAR said:   9 years ago
By perpendicular theorem Ixx + Iyy = Ixx.

φd^4/64 + φd^4/64 = φd^4/32.

Rashed said:   9 years ago
Thank you all. the Answer is right.

DEVENDRA MISHRA said:   9 years ago
Area moment of inertia.

Ix = nd4/64.
Iy = nd4/64.

The axis perpendicular to the section.

Iz = nd4/32.


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