A spherical steel pressure vessel (diameter 480 mm, thickness 8.0 mm) is coated with brittle lacquer that cracks when the strain reaches 150 × 10-6 (see figure). What internal pressure p will cause the lacquer to develop cracks? (Assume E = 205 GPa and 0.30.)
![141_465667bd-e1dc-4439-bb95-523a9b2522d0 (1).png](https://secure.tutorsglobe.com/CMSImages/141_465667bd-e1dc-4439-bb95-523a9b2522d0 (1).png)