The screw has a single thread. If a total torque of 10.50 lb in is available to lift a weight, the heaviest weight that can be lifted directly by the screw, as described in class, is Outside dia thread count thread friction coeff collar friction coeff collar dia
5/8 in 8 threads/in 0.10 0.06 0.6875 in
A. 72.3 lbf
B. 152.2 lbf
C. 80 lb
D. 154.3 ibt
E. 32 ibt

Steam at a pressure of 100 kpa and a quality of 50% initially fills a rigid vessel having a volume of 0.5 m^3. the steam is then heated, causing the pressure in the vessel to rise to 150 kpa. determine: i. the mass of the steam in the vessel. ii. the temperature and quality of the steam after the heating process. ii the mass of the vapour, mg and liquid, m in the vessel after the heating process. if the steam in the vessel is now further heated, what would the pressure and temperature in the vessel be when all steam has turned into saturated vapour? b. sketch the processes in part (a) and part (b) on p-v and t-v diagrams, indicating clearly the temperatures, pressures and the paths. c. (0.59kg, 111.4°c, 73%, 0.4307kg, 0.1 593kg, 2.11 bar, 121.84°c)