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## Homework Statement

A skier of mass 69.7 kg is pulled up a slope by a motor-driven cable.

(a) How much work is required to pull him a distance of 59.8 m up a 29.9° slope (assumed frictionless) at a constant speed of 1.90 m/s?

(b) A motor of what power is required to perform this task?

hp

## Homework Equations

(a) w=f*change in distance*cos angle

(b) power=work/change in time

## The Attempt at a Solution

gravity is the only force in play. so the equation for work would be

w=(9.8m/s^2)(59.8m)(cos29.9)=508.03

take that value and divide it by change in time to get power

*correct?