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## Homework Statement

A 80kg skier grips a moving rope that is powered by an engine and is pulled at constant speed to the top of a 23*degrees hill. The skier is pulled a distance x = 250m along the incline and it takes 2.1 minutes to reach the top of the hill.

If the coefficient of kinetic friction between the snow and skis is uk = 0.10, what horsepower engine is required if 30 such skiers (max) are on the rope at one time?

## Homework Equations

P= w/t=mgy/t

## The Attempt at a Solution

80x9.8xsin23*=306

Fnuk=Fr

80x9.8x.1=78.4

306+78.4=390N

390x9.8x250/126s=773 W X30 =3.1x10^4hp