The cross-section of a bar is subjected to a uniaxial tensile stress $p$ . The tangential stress on a plane inclined at $\emptyset$ to the

cross-section of the bar would be

- 1
  
  $\frac{p \sin 2 \emptyset}{2}$
- 2
  
  $p \sin 2 \emptyset$
- 3
  
  $\frac{p \cos 2 \emptyset}{2}$
- 4
  
  $p \cos 2 \emptyset$

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