A pressurized thin-walled cylindrical tank of radius and wall Thickness t=4 mm is acted...

A pressurized thin-walled cylindrical tank of radius and wall Thickness t=4 mm is acted on by end torques and tensile forces P (Fig. P1.35 with sense of P reversed). The internal pressure is p=5 MPa. Calculate the maximum permissible value of P if the allowable tensile stress in the cylinder wall is 80 MPa.