1. The problem statement, all variables and given/known data The ski tow at a ski resort takes 1000 people per hour to a height of 500 m. The average mass of the skiers using this tow is 60 kg. In the normal operation of the ski tow, the energy lost to fictional forces is 60%. How much power is required to run the ski tow? 2. The attempt at a solution Power = (work) / (time) = (mgh) / (time) = ( (60*1000) ( 9.81) (500) ) / (3600) = 81750 Watts. However, it will need an additional 60% of Power. Thus: 81750 * 1.60 = 130,800 Watts.