Finding average power for an object being vertically lifted

[emilykorth]

Homework Statement

If a ski lift raises 100 passengers averaging 668 N in weight to a height of 175 m in 60 s, at constant speed, what average power is required of the force making the lift?

Homework Equations

P_instantaneous=Fv
P=W/t
W=Fd

The Attempt at a Solution

I tried to solve this by first using W=fd to find W...so 668/175=3.817
I then used P=W/t so 3.817/60
however this answer was wrong...what am I doing wrong?

 

[Hootenanny]

Homework Statement

If a ski lift raises 100 passengers averaging 668 N in weight to a height of 175 m in 60 s, at constant speed, what average power is required of the force making the lift?

Homework Equations

P_instantaneous=Fv
P=W/t
W=Fd

The Attempt at a Solution

I tried to solve this by first using W=fd to find W...so 668/175=3.817
I then used P=W/t so 3.817/60
however this answer was wrong...what am I doing wrong?

668 Newtons is the average weight of one of the passengers.

Secondly, why are you dividing by the distance?

 

[emilykorth]

wow I was making a really stupid mistake. Thanks for the help, I figured it out