UPSC Civil Service Exam Questions

Q1:
A bar of square cross-section, having area of cross-section 'A' is subjected to a compressive force 'P' as shown in the figure. The intensity of the tangential stress on the oblique plane is given by

A P sin 2θ

B P cos 2θ

C

D

ANS:C -

Normal stress = P cos^2θ.

Tangential or shear stress= p/2 sin2θ.



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