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Question

A bar of square cross-section, having an 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
PAsin 2θ
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B
PAcos 2θ
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C
P2Asin 2θ
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D
P2Acos 2θ
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Solution

The correct option is C P2Asin 2θ
The intensity of tangential stress.

=(PA)sinθcosθ=P2Asin2θ

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