Consider an A36 steel section (let's say a W-shape) used as a steel column in a certain structural application. A normal service load of 108 kips is expected on this column during its service life. Using load and resistance factor design (LRFD), it is determined that the minimum cross-sectional area required for this steel section to safely carry the service load is 6 in2 . If a load factor of 1.5 was used in the LRFD of this column, the resistance factor was:

Asimple speed reducer is composed of 2 spur gears. the pinion gear has a pitch diameter of 0.75" and 36 teeth while the driven gear has a pitch diameter of 4.0" and 192 teeth. a)-what is the diametral pitch of each gear? b)-if an electric motor rotating ccw at 3000 rpm is coupled to the pinion, what is the rotational speed of the driven gear? c)-if the torque delivered to the pinion is 1 n-m, what is the torque on the driven gear? d)-what is the power transmitted by the gear train?