A cylindrical bar, embedded in a

is subject to forces $P,Q$ and S $,$ and

torque T

its cantilevered end $($see$...)$

in

figure$).$

For point $"$A$,"$ determine:

$($a$)$Tensor of efforts. ;

$($b$)$ principal efforts;

c$)$ Maximum cutting effort.

P$=100$ kN; Q$=5$ kN; S$=10$ kN; T$=5$ kN$-$m