The average normal stress in rod ab will be 217.622 kpa. It is the internal resistive force.
The force applied perpendicular to the surface of an item per unit area across which that force is spread is known as normal stress. It is denoted by [tex]\rm \sigma[/tex] .
The average normal stress in rod ab.
Diameter of rod AB=60 mm
R=30×10⁻³ m
Area of the rod AB face is ;
A=πr²
A=3.14×(30×10⁻³)²
A=0.0942
The average normal stress in rod ab is found as;
[tex]\rm \sigma = \frac{P}{A} \\\\ \sigma= \frac{205 \times 10^3}{0.942} \\\\\\ \sigma=217.622 \ kPa[/tex]
Hence,the average normal stress in rod ab will be 217.622 kpa.
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