(Solved): I want (only), you to explain to me how to get the direction of the moment in general how i can dete ...

I want (only), you to explain to me how to get the direction of the moment in general how i can determine if it's on y or z or x, then show me how to apply it on all the example bleow , in clear writing please, thank you very much

The yield stress is $$S_y=420\times 10^6$$ Critical stress element will be at the wall at $$A$$ where there is bending and torsion. The exact location of the critical element is as shown in the diagram below: The bending moment and torsion at $$A$$ are computed as: $$\begin{array}{rl}{M}_y& =2500\times 0.045=112.5\mathrm{Nm}\\ T& =2500\times 0.09=225\mathrm{Nm}\end{array}$$ the shaft $$AB$$. [12 poin The yield stress is $$S_y=420\times 10^6$$ Critical stress element will be at the wall at $$A$$ where there is bending and torsion. The exact location of the critical element is as shown in the diagram below: The bending moment and torsion at $$A$$ are computed as: $$\begin{array}{rl}{M}_y& =500\times 0.09=45\mathrm{Nm}\\ M_z& =1500\times 0.045=67.5\mathrm{Nm}\\ M_x& =T=1500\times 0.09=135\mathrm{Nm}\end{array}$$ a) Critical stress element will be at the wall at $$A$$ where there is i) Two plane bending, ii) torsion and iii) axial loading. The exact location of the critical element will be determined by the bending: $$M_y=500\times 0.2=100\mathrm{Nm},M_z=250\times 0.4=100\mathrm{Nm}$$ b) State whether the structure is structurally safe. $$\{$$ PI $$1.4\}$$ Critical stress element will be at the wall at $$A$$ where there is bending and torsion. The exact location of the critical element is as shown in the diagram below: There will be bending moment and torsion at $$A$$ are computed as: $$\begin{array}{l}{M}_x=T=250\times 0.1=25\mathrm{Nm}\\ M_z=250\times 0.5=125\mathrm{Nm}\end{array}$$