Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 12)
12.
A beam of length L is pinned at both ends and is subjected to a concentrated bending couple of moment M at its centre. The maximum bending moment in the beam is
Discussion:
56 comments Page 5 of 6.
Vanith Krishna said:
9 years ago
The answer should be M.
(1)
Probir sarkar said:
9 years ago
I think the correct answer is M/2.
Prasad said:
9 years ago
It is m. Because at centre, the moment will be m/2 that means its half of moment. Max is m. So the answer is m.
Sanjeev Ranjan said:
9 years ago
The answer is M because pinned support don't carry any moment i.e. zero moments (Decreasing moment towards the either support in this case) and here is clear that couple M is applied at midspan so center carries maximum bending moment.
Dalisha said:
9 years ago
I too agree with the answer a) M.
Narob Kifle said:
9 years ago
Max moment occurs at center. So. Take the sum of the moment.
At A is zero, By * L = M,
So the sum of vertical force = 0, By + Ay = 0.
We got Ay = -M/L. So, M/2 is the correct answer.
At A is zero, By * L = M,
So the sum of vertical force = 0, By + Ay = 0.
We got Ay = -M/L. So, M/2 is the correct answer.
Akash said:
9 years ago
Answer is wrong, It should be M/2.
Subhankar said:
9 years ago
It is M/2 because Rb = M/L& Ra = -M/L. Moment from mid point = RbxL/2 = M/LxL/2 = M/2 and M/2 - M = -M/2.
Patil said:
9 years ago
Answer is M.
Couple is due to two equal forces in different direction so its does not depend on other parameters, i.e couple will be same for entire length.
Couple is due to two equal forces in different direction so its does not depend on other parameters, i.e couple will be same for entire length.
Manaswi said:
9 years ago
Please tell which one is correct?
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