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Homework Task: Find the power of water

  • Thread starter besfort
  • Start date
  • #1
5
0

Homework Statement


Find the power of the water if it falls from the height (h= 20m), for every minute falls 80m^3 (Volume=80m3).


Homework Equations


P=A/t
W = mg
A = Fh
P= Fv


The Attempt at a Solution


I attempted to find the mass first, but I couldn't find any formula to do so.
 

Answers and Replies

  • #2
berkeman
Mentor
57,452
7,469

Homework Statement


Find the power of the water if it falls from the height (h= 20m), for every minute falls 80m^3 (Volume=80m3).


Homework Equations


P=A/t
W = mg
A = Fh
P= Fv


The Attempt at a Solution


I attempted to find the mass first, but I couldn't find any formula to do so.
1cc of water weighs 1 gram. So a liter of water weighs a kilogram. That should get you to the answer.
 
  • #3
5
0
If 80m^3 = 80000l, then that means the mass is 80000kg, aye?
 
  • #4
rock.freak667
Homework Helper
6,230
31
If 80m^3 = 80000l, then that means the mass is 80000kg, aye?
Right so you have 80,000 kg falling per minute. How much kg per second is that? Hence how much Newtons per second is that?

Remember that Power = Rate at which work is done = Force*distance/Time
 

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