1.A steel scuba tank is 24 in. long and has an external diameter of 7.25 in. and an internal diameter of 6.7 5in. Say the tank is to carry a pressure of 3000psi . Determine the hoop stress in the tank wall. Determine the axial stress in the tank wall.
2.The cylindrical vessel with an outer diameter of 4ft and a wall thickness of 0.625 in. is allowed to have a maximum normal stress in its wall of 4600psi . Determine the maximum allowable pressure.