Mechanical Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 4 (Q.No. 34)
34.
If the section modulus of a beam is increased, the bending stress in the beam will
Discussion:
8 comments Page 1 of 1.
Dinu said:
5 years ago
The answer is correct because bending stresss=bending moment/section modulus. So the stress and modulus are inversely proportional to each other.
Swathikarthik said:
8 years ago
The answer ss C because bending stress =M/Z.
Where z is called as section modulus, therefore bending stress is inversely proportional to Z.
Where z is called as section modulus, therefore bending stress is inversely proportional to Z.
Joy said:
5 years ago
Bending STRESS is inversely proportional to Z while bending MOMENT is directly proportional to Z. So, the answer is correct.
Abid said:
7 years ago
(c) is the right Answer.
As;.
M/I=σ/Y and I/Y=Z.
So M=Z*σ => σ is inversely proportional to Z.
As;.
M/I=σ/Y and I/Y=Z.
So M=Z*σ => σ is inversely proportional to Z.
Naresh jetti said:
8 years ago
Bending stress, sigma b=pe/Z.
So, if bending stress increases then section modulus decreases.
So, if bending stress increases then section modulus decreases.
Roop said:
7 years ago
It's answer is increase because M/Z so that Z increase while M increase.
Vijay said:
9 years ago
Answer is increases because M is directly proportional to Z.
Shashi said:
7 years ago
What is the right answer?
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