Mechanical Engineering - Strength of Materials - Discussion

Discussion Forum : Strength of Materials - Section 2 (Q.No. 25)
25.
The resultant stress on an inclined plane which is inclined at an angle θ to the normal cross-section of a body which is subjected to a direct tensile stress (σ) in one plane, is
σ sin θ
σ cos θ
σ sin 2θ
σ cos 2θ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
15 comments Page 2 of 2.

Abhishek singh said:   5 years ago
Question is for resultant stress not for normal stress. So the given answer is right.

SURAJ PRASAD KESHARI said:   4 years ago
Thank you all for explaining this.

Yashodanand said:   4 years ago
Normal stress σ/2(1+cos2θ)
Shear stress σ/2sin2θ
Resulant = √(normal stress 2+shear stress 2) then answer become σcosθ.
(2)

Vishal said:   3 years ago
Yes, the answer given is right, we have to use 1+cos2θ = 2cos^2θ.

AKULA ABHILASH said:   3 years ago
Shear stress = σ/2 sin2θ.
Normal stress = σcos^2 θ.
Resultant stress = σcosθ.


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