A 1,00,000 kg engine is moving up a slop...

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 )

`9.23xx10^(4)`kg

`9.15xx10^(3)`kg

`8.41xx10^(4)`kg

`8.65xx10^(3)`kg

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A 100 metric ton engine is moving up a slope of gradient 5^(@) at a speed of 100 metre // hour. The coefficient of friction between the engine and the rails is 0.1. If engine has an efficiency of 4% for converting heat into work, find the amount of coal the engine has to burn in one hour. Burning of 1 kg coal yields 50000J.

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