23 An engine of mass 105 kg is moving up an inclined plane

Last updated: 6/3/2023

23 An engine of mass 105 kg is moving up an inclined plane of gradient 5 at a speed of 100 m h The engine has an effciency of 4 for converting heat into work claculate the amount of coal the engine has to burn up in one hour if the coefficient of friction between engine and rail is 0 1 Burning of 1 kg coal yields 50 000 joule Ans 9 51 x 10 kg