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A bar of cross section A is subjected to...

A bar of cross section A is subjected to equal and opposite tensile forces F at its ends. Consider a plane through the bar making an angle `theta` with a plane at right angles to the bar as shown in figure.

The tensile stress at this plane in terms of F, A and `theta` is

A

`(Fcos^(2)theta)/(A)`

B

`(F)/(Acos^(2) theta)`

C

`(Fsin^(2) theta)/(A)`

D

`(F)/(Asin^(2) theta)`

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