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Question

The cross-section of a bar is subjected to a uniaxial tensile stress 'ρ'. The tangential stress on a plane inclined at θ to the cross-section of the bar would

A
ρsin2θ2
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B
ρsin 2θ
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C
ρcos2θ2
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D
ρcos 2θ
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Solution

The correct option is A ρsin2θ2
Normal stress=ρcos2θ
Tangentialstess=ρsinθcosθ=ρsin2θ2

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