Ahollow circular steel strut with its ends position fixed has a length of 2.5m, its external diameter being 10 cm and its internal diameter is 8.8 cm. before, loading, the strut is bent with a maximum deviation of 0 45 cm: assuming that the centre line ofthe strut is sinusoidal, determine the maximum stress due to a central compressive end load of 10 kn. take e 210 gpa.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.