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?(adsbygoogle = window.adsbygoogle || []).push({});

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?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Finding Average Power

**Physics Forums | Science Articles, Homework Help, Discussion**