(Solved):
The thin-wall cantilever beam shown in the figure above \( (\mathrm{G}=100 \mathrm{GPa}) \) is sub ...
The thin-wall cantilever beam shown in the figure above \( (\mathrm{G}=100 \mathrm{GPa}) \) is subjected to a clockwise torque of \( 100 \mathrm{Nm} \) at \( \mathrm{z}=0.5 \mathrm{~m} \), and an anti-clockwise torque of \( 200 \mathrm{Nm} \) at \( \mathrm{z}=1 \mathrm{~m} \) (i.e., the free end). The torques are applied in the \( x-y \) plane. Calculate the twist angle of the beam at its free end.