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Water falling = how much power?

by Bigdane
Tags: falling, power, water
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Bigdane
#1
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?
watts

i tried to use the power equation but im just not sure how the numbers relate.
help please?
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LowlyPion
#2
Feb2-09, 03:24 PM
HW Helper
P: 5,343
You need to calculate the rate of potential energy delivery which is m*g*h/sec.
timon
#3
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.

Bigdane
#4
Feb2-09, 07:18 PM
P: 14
Water falling = how much power?

thanks guys


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