A2.5-in diameter machinedround bar has a groove 0.06-in deep with a 0.06-in radius machined into it. the bar is made of 3140 annealedsteel and is subject to a purely reversed bending moment of 12 kip. in. a reliability of 95% is required for the estimate of endurance limitand assume gradient factor for endurance limit modification to be 0.9. calculate the safety factor using modified goodman and soderberg criteria for infinite life.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.

Plan an experiment to measure the surface tension of a liquid similar to water. if necessary, review the ncfmf video surface tension for ideas. which method would be most suitable for use in an undergraduate laboratory? what experimental precision could be expected?