List of top Solid Mechanics Questions on Thin walled pressure vessels

A closed thin cylindrical tank with mean diameter \(d = 300 \, mm\) and thickness \(t = 2 \, mm\), is subjected to a uniform internal gas pressure \(p\). The allowable shear stress on the curved wall of the tank is 70 MPa. Based on the Tresca criteria, which one of the following options for the maximum safe value of \(p\) (in MPa) is CORRECT?
Consider an electric pole with dimensions as shown in the figure. Let the end $R$ be subjected to a vertical force $F$. The flexural rigidity of both vertical and horizontal bars is $EI$. Neglect the axial deflection of the vertical bar, and all effects of self-weight. The vertical deflection at end $R$ is:
A thin cylinder (closed at its ends) of radius \( r \) and thickness \( t \) (\( r \gg t \)) is subjected to internal pressure \( p \). The maximum shear stress in the wall of the cylinder is