Calculate the power of an engine which can pull a train of mass `25000` quintal up an incline of 1 in 100 at the rate of `10.8km//h` Resistance due to friction is `2N//"guintal"`.

Calculate the power of an engine , which can just pull a train of mass 5000 quintals up an incline of 1 in 50 at the rate of 54 km//h . The resistance due to friction is 0.8 N //"quintal" . Take g = 9.8 m//s^(2) .

Calculate the power of an engine which can pull a mass of 500 metric ton up an incline rising 1 in 100 with a velocity of 10 ms^(-1) .