Answer:
Explanation:
Given
mass of skier=60 kg
distance traveled by skier=75 m
inclination[tex](\theta )=30^{\circ}[/tex]
speed (v)=2.4 m/s
as the skier is moving up with a constant velocity therefore net force is zero
[tex]F_{net}=0[/tex]
Force applied by cable[tex]=mg\sin \theta[/tex]
[tex]F=60\times 9.8\times \sin (30)=294 N[/tex]
work done[tex]=F\cdot x[/tex]
[tex]W=294\cdot 75=22.125 J[/tex]
(b)Power[tex]=F\cdot v[/tex]
[tex]P=294\cdot 2.4=705.6 W\approx 0.946 hp[/tex]
