An engine of power 58.8 {kW} pulls a train of mass 2 \times 10^{5} {kg} with a velocity of 36 {kmh}^{-1}. The coefficient of friction is

KEAM 2016 Physics and Chemistry Paper

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An engine of power 58.8kW pulls a train of mass 2×105kg with a velocity of 36kmh−1. The coefficient of friction is

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