Asteel has a brinell hardness number of 200 under a 1500 load. a) what is the diameter of the indentation (mm) formed in the steel during the test? b) what is the estimated ultimate tensile strength (mpa) according to equation 2.32 c) what is the equivalent ultimate tensile strength in psi?

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?