# Homework Help: Finding Average Power

1. Oct 10, 2004

If a ski lift raises 100 passengers averaging 656 N in weight to a height of 145 m in 60 s, at constant speed, what average power is required of the force making the lift?

I know average power is P=W/t, where W is work and t is change in time. Since work is w=fd, I did 656 N*145 m and then took that number and multiplied it by 100 for the 100 passengers. I then took this product and divided it by the change in time, 60 seconds, and I got 158533 W for the average power, and it's wrong. Am I just misunderstanding the problem, or am I really doing this wrong?

2. Oct 10, 2004

### TenaliRaman

I think u r right! unless i missed the same thing u missed!

-- AI

3. Oct 10, 2004

lol well the answer is wrong so I don't know.

Last edited: Oct 10, 2004
4. Oct 10, 2004

I even tried not multiplying by 100 and it's wrong

5. Oct 10, 2004

### HobieDude16

ok, heres what ya do....
P=(F)(V)
P=(W)(V)
P=(100)(656)(145/60)
thats how i did it

6. Oct 10, 2004