Refer Below.

$\left[\begin{array}{ccc}0& 0& 0\\ 0& 0& 0\\ 0& 0& 2\mathrm{.}4\end{array}\right]\{\begin{array}{ccc}\text{:}[& \text{k}\text{s}\text{i}& ]\\ & (PT.& A)\end{array}$

THE STATE OF STRESS

AT PT$.$ A IS SHTOWN IN

TTE TENSOR. CALCU WATE

TTE VALUE OF THE

UNKNOWN APPLED EXIERNAL LOAD

$(P).$ Let $r=6in$ : $b=3in.$FOR The TWO STATES OF STRESS SHOWN, CALCU CATE THE INTERNAL TORQUE PRESENT & THE RADIUS OF THE CROSS$-$SECTION.