(8-72) A 75-kg skier grips a moving rope that is powered by an engine and is pulled at constant spee

(8-72) A 75-kg skier grips a moving rope that is powered by an engine and is pulled at constant speed to the top of a 23° hill. The skier is pulled a distance x = 220 m along the incline and it takes 2.0 min to reach the top of the hill. If the coefficient of kinetic friction between the snow and skis is μ_k=0.10 , what horsepower engine is required if 30 such skiers (max) are on the rope at one time?