Civil Engineering - Strength of Materials - Discussion


For a simply supported beam with a central load, the bending moment is

[A]. least at the centre
[B]. least at the supports
[C]. maximum at the supports
[D]. maximum at the centre.

Answer: Option D


No answer description available for this question.

Talari Hari said: (Jul 18, 2013)  
In simply supported beam both ends have zero bending moment and it has maximum bending moment at centre.

Sunil said: (Oct 11, 2015)  
I think answer is B because at the support bending moment is zero for simply supported beam and maximum at center but the position of load acting is not decided so answer B is right.

Baloch said: (Feb 20, 2017)  

As you said zero at supports,

There is difference between zero and least,

Answer is zero at supports and max at centre, so (D).

Tailam Mahehs said: (Jul 13, 2017)  
Nice explanation, thanks @Baloch.

Kajal Tomar said: (Mar 8, 2019)  
But in this beam least is zero. At least means the smallest value of BM and that is zero at support so least value of BM in this beam is zero.

So, B and D both are correct.

Ref: Baloch.

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