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Question

A bar of cross-section A is subjected two equal and opposite tensile forces at its ends consider a plane section of the bar whose normal makes an angle θ with the axis of the bar.
What is the shearing stress on this plane?

A
(F/3A)sin2θ.
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B
(F/2A)sin2θ.
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C
(F/4A)sin2θ.
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D
(F/5A)sin2θ.
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Solution

The correct option is B (F/2A)sin2θ.

Shear Stress =Falong the plane A plane

=FsinθAsecθ=FsinθcosθA=(F2A)(sin2θ)



1990484_1016296_ans_222309ddbae84898ba82c648f2ab640b.PNG

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