Topic: Strength of Materials
Longitudinal stress in a thin cylinder subjected to internal pressure is-
- A. Half of the hoop stress
- B. Twice the hoop stress
- C. Become four times
- D. None of the above
Answer: A. Half of the hoop stress
Explanation: For Thin Cylinder: Hoop/Circumferential stress $\sigma_{h}=\frac{Pd}{2t}$. Longitudinal stress $\sigma_{l}=\frac{Pd}{4t}$. Thus, $\sigma_{l}=\frac{1}{2}\sigma_{h}$.