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.​

Areheat rankine cycle operates with water as the working fluid. steam enters the first turbine at 8 mpa and 450°c and exits at 0.8 mpa. it is then reheated to 400°c before entering the second turbine, where it exits at 10 kpa. if the amount of work into the pump is 8.04 kj/kg and the net work per cycle produced is 1410.25 kj/kg, determine the thermal efficiency of the cycle.