A helical coil spring is to be made of A227 steel (hard-drawn) wireof 4-mm diameter. The free length of the spring should be 80 mm and itsends will be plain. (1)Design the coil diameter of the spring so that it deflects by 5 mm from its free length under a compressive force of 50 N.(2)Determine if the spring will fail by yielding when it is compressed to its solid length. Assume that the shearyield strength of the material is 55% of its tensile strength.

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false