An engine is pulling a train of mass `m` on a level track at a uniform speed `u`. The resistive froce offered per unit mass is `f`.A. Power produced by the engine is `mfu`B. The extra power developed by the engine to maintain a speed `u` up a gradient on of `h` in `s` is `(mghu)/(s)`.C. The frictional force exerting on the train is `mf` on the level trackD. None of above is correct

An engine is pulling a train of mass `m` on a level track at a uniform

1.	An engine is pulling a train of mass `m` on a level track at a uniform speed `u`. The resistive froce offered per unit mass is `f`.A. Power produced by the engine is `mfu`B. The extra power developed by the engine to maintain a speed `u` up a gradient on of `h` in `s` is `(mghu)/(s)`.C. The frictional force exerting on the train is `mf` on the level trackD. None of above is correct
Answer» Correct Answer - A::B::C

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