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# The spherical gas tank is fabricated by bolting together two hemispherical thin shells of thickness 30 mm.

The spherical gas tank is fabricated bybolting together two hemispherical thinshells of thickness 30 mm. If the gascontained in the tank is under a gaugepressure of 2 MPa, determine the normalstress developed in the wall of the tank andin each of the bolts. The tank has an innerdiameter of 8m and is sealed with 900 boltseach 25 mm in diameter.