Mechanical Engineering - Strength of Materials - Discussion

Discussion Forum : Strength of Materials - Section 8 (Q.No. 14)
14.
The section modulus of a circular section about an axis through its C.G., is
πd2/4
πd2/16
πd3/16
πd3/32
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.

Suhail said:   5 years ago
For solid shaft Z = J/R = π/32 * D4/ D/2.
Z = π/16 D3.
(1)

SUPROTIM MAZUMDER said:   7 years ago
@Gautom.

It's a ratio of the moment of inertia and neutral axis.

Gautom Mondal said:   8 years ago
What is the definition of section modulus?

Paramesh said:   1 decade ago
Section modulus Z = I/y where y = D/2.

I for the circular cross section is (Pi/64)*d^4.

So Z = ((Pi/64)*(d^4))/(D/2).

Z = (Pi/32)*D^3.

So answer is D.
(1)

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