A cylindrical tank has a mean radius of 40 cm and thickness of 10 cm. It is subjected to an external pressure of 140 kg/cm2 and maximum internal pressure is 900 kg/cm2 . Determine the maximum internal tangential stress of the tank. A. 3,884.7 kg/cm2          C. 1.7684 kg/cm2 B. 4,623.6 kg/cm2          D. 2,947.5 kg/cm2

A spherical balloon with an outer diameter of 490 mm and thickness 0.3 mm is filled with a gas. Calculate maximum permissible pressure (in kPa) in the balloon if the allowable normal strain at the outer surface of the balloon is 0.1. Assume E = 4 MPa and v = 0.47. (Assume that the given radius or diameter is an inside dimension and that all internal pressures are gage pressures.) kPa

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Q3. An aluminium-alloy cylinder of internal diameter 10.000cm and wall thickness 0.50cm is shrunk onto a steel cylinder of external diameter 10.004cm and wall Thickness 0.50cm. If the values of Young's modulus for the alloy and the steel are 70 GN/m² and 200 GN/m", respectively, estimate the circumferential stresses in the cylinders and the radial pressure between the cylinders. SPARK4