You are to determine the size of the engine, in kilowatts and horsepower, needed

Question

You are to determine the size of the engine, in kilowatts and horsepower, needed to run the tow rope at a ski hill. You have determined that the hill is 220 m long, has a 23 degree slope, and that the average coefficient of kinetic friction between the skis and snow is = 0.10. The manager of the hill has told you the average mass of the skiers is 75 kg. the tow rope must be able to pull up to 30 skiers at a time, and it should take 2.0 min for the skiers to reach the top of the hill at a constant speed.

Explanation / Answer

Work done = mgh = 75*30*9.8*220*0.1*sin 23

Work done = 189543.67 J

Power = workdone/time = 189543.67 / 2*60 = 1579.5 Watts

Power = 1.579 Kilo Watts

Related Questions

Navigate

• Browse (All)
• Browse Y
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.