Longitudinal stress in a cylinder is given by [symbols have their usual meanings].
(a) PD/2t
(b) 2PD/t
(c) PD/4t
(d) 4PD/t
I got this question in a mock test.
This intriguing question comes from the Cylinder & Pressure Vessels concept in chapter Cylinders and Pressure Vessels and Design of IC Engine Components of Machine Design