Register to reply

Water falling = how much power?

by Bigdane
Tags: falling, power, water
Share this thread:
Feb2-09, 02:52 PM
P: 14
Water flows over a section of a waterfall at the rate of 3.2 104 kg/s and falls 33 m. How much power is generated by the falling water?

i tried to use the power equation but im just not sure how the numbers relate.
help please?
Phys.Org News Partner Science news on
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100
Feb2-09, 03:24 PM
HW Helper
P: 5,341
You need to calculate the rate of potential energy delivery which is m*g*h/sec.
Feb2-09, 03:28 PM
P: 56
use energy:

E[tex]_{gravitational}[/tex] before = E[tex]_{kinetic}[/tex] after

The gravitational energy of the water is turned into kinetic energy

the amount of power generated is the energy per second.

Feb2-09, 07:18 PM
P: 14
Water falling = how much power?

thanks guys

Register to reply

Related Discussions
Falling Water Droplet Advanced Physics Homework 1
Falling in water General Physics 3
Falling in water General Physics 3
Falling water General Physics 3
Falling bucket of water Classical Physics 18