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.

unlike the threaded fasteners which are used to clamp the machine members, power screws are used to transmit power. common applications of power screws are: screw jacks: to lift weight. lead screw of lathe: for axial movement of tool and its precise positioning.

answer:

d. attempt to find the owner, then leave your information if you cannot find them.

explanation:

d. represents both (b) and (c).

more logical as well.

b and c are to complicated.

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