A bar ABCD has three segments where the second segment is loaded by a constant distributed torque along its entire length. The bar is fixed at both ends. The total length of the bar is L. The two end segments have a diameter of d 1 and the middle segment has a diameter of d2 . Each segment has a shear modulus of G. Use d 1.

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?