Civil Engineering - Strength of Materials - Discussion

Discussion Forum : Strength of Materials - Section 1 (Q.No. 9)
9.
The shape of the bending moment diagram over the length of a beam, having no external load, is always
linear
parabolic
cubical
circular.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
36 comments Page 2 of 4.

Sryadav said:   7 years ago
Tell me one thing please when you neglect self-weight than without external loading which type of load acting on the beam so bending moment in the beam is linear?

So, the correct answer is parabolic.
(2)

Aneesha said:   7 years ago
Beams with no external loads are considered as 2D. Therefore, self-weight is not considered. Hence the shape will be linear.

Prasanth said:   7 years ago
Answer is linear. There is no external load Hence it is liner.

AVY said:   8 years ago
I think answer is parabola. Self weight of beam is always acts as UDL.

Belkeri shivakumar said:   8 years ago
Linear is correct. No any load sfd is rectangular than bm is linear.

Tailam mahesh said:   8 years ago
Yes. You people first read the question. All of said linear is satisfactory if without consider dead loads. If it considers parabola is correct.

Chandu said:   8 years ago
Yes, linear is the correct answer.

Dhruba said:   8 years ago
Yes, linear is the correct answer since there is no point or UDLload acting on the beam and the self-weight of the beam is neglected.

Dileep Deepu said:   9 years ago
Here there is no load acting on the beam.

So there is no upward force and downward force on the beam (self-weight is neglected) so BM variation is "Zeo (0) ".

Naren said:   9 years ago
We know that self-weight is UDL and UDL BM is parabola.

Here, the answer is the parabola (when self-weight should be considered) or it must be linear (when self-weight should not be considered).


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