In mid-nineteenth century England horses were often used to pull barges along ca

Question

In mid-nineteenth century England horses were often used to pull barges along canals. The horse, naturally, trudged along a path parallel to the canal and so the rope to the barge was at an angle to the motion of the barge. a) If such a horse was pulling with a force of 155 N at a speed of 12.60 km/h and the angle of the rope with respect to the canal direction was 35.0 degrees how much work (in KJ) does the horse do in 9.1 minutes ? b) What is the average power ? (Give your answer in HP, Remember: 1HP = 746 W)

Explanation / Answer

12.6 km/hr=3.5 m/s so P=F cos 35 * v=155 cos 35 * 3.5=444.4 a)so W=P*t=p*9.1*60=242637 J b)P=444.44/746 HP=.6 HP

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