Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 15)
15.
If the shear force along a section of a beam is zero, the bending moment at the section is
Discussion:
25 comments Page 2 of 3.
Plan said:
7 years ago
If the question was "The positive or Negative BM, then the answer would have been maximum or minimum". But since the question is about the BM, if we draw a BM diagram of fixed end beam, there will be two maximum BM, one is -ve and the other is +ve. So, for both maximum values, the shear force should be zero.
So, the answer is maximum.
So, the answer is maximum.
Chay said:
7 years ago
We say BM is constant for this.
Rocky czicy said:
7 years ago
Shear force is zero, i.e Result BM either max or min n.
Talari hari said:
1 decade ago
When shear force zero at the time only we have maximum bending moment.
Hemant saini said:
8 years ago
In magnitude numerical value will be maximum.
But when we consider negative sign so that it can be maximum or minimum.
Because dM/dX=0 so, M can be max or min.
But when we consider negative sign so that it can be maximum or minimum.
Because dM/dX=0 so, M can be max or min.
Dhaval said:
8 years ago
Answer is maximum or minimum? Please explain.
Dhanunjay said:
8 years ago
Yes, @Syed Irfan.
My argument is also that only.
At the max BM SF will be zero. Not possible reverse side like where SF is zero BM is max.
My argument is also that only.
At the max BM SF will be zero. Not possible reverse side like where SF is zero BM is max.
Syed irfan said:
8 years ago
No, it will not be maximum because bending moment is maximum at a point where shear force is zero only at a point not along the section.
Muniraj jodli said:
8 years ago
Like cantilever, and subjected to bending moment at the free end then there is no shear force (s.f.d is a straight line), and b.m.d is rectangular.
Anil said:
9 years ago
You are right @Jay.
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