A Locomotive starts from rest and pulls a train, weighing 20 X 106 N down a 1per cent grade. The train resistance is 5 N/kN. If the draw-bar pull is constant and equal to 50 kN find the speed of the train after it has moved 1500 m. Find the final horse power developed by the engine.​

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?