A 1,00,000 kg engine is moving up a slope of gradient 5^(@) at a speed of 100 m/h. The coefficient of friction between the engine and rails is 0.1. If the engine ahs an efficiency of 4% for converting heat into work, find the amount of coal the engine has to burn up in one hour ( burning of 1 kg of coal yields 50,000 J )

A 1,00,000 kg engine is moving up a slope of gradient 5^(@) at a speed

1.	A 1,00,000 kg engine is moving up a slope of gradient 5^(@) at a speed of 100 m/h. The coefficient of friction between the engine and rails is 0.1. If the engine ahs an efficiency of 4% for converting heat into work, find the amount of coal the engine has to burn up in one hour ( burning of 1 kg of coal yields 50,000 J )
Answer» `9.23xx10^(4)`KG `9.15xx10^(3)`kg `8.41xx10^(4)`kg `8.65xx10^(3)`kg Answer :B

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