Answer to Question #78448 in Physics for Usha

Question #78448

train of mass 800metrictonnes is moving with a velocity 72kmph if the resistive force acting on the train is 10newtons per metrictonne find the power of engine?

Expert's answer

The power of engine
Power=(work done)/time
P=W/t=Fs/t=Fv
=800×10×72×(1000 )/(3600 )=160 000 W=160 kW

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