- #1
cc94
- 19
- 2
Homework Statement
Suppose you have a tank 10 m high. The tank is currently filled 5 m high with 1000 kg of water. How much energy does it take to pump in another 1000 kg of water from the bottom to fill the column to 10 m? (Ignore friction, etc.)
Homework Equations
E = m*g*h
The Attempt at a Solution
I'm always confused by what we're supposed to consider in fluid mechanics problems. Is the answer simply
1000*9.8*5
since the waterline is currently at 5 m and needs to be raised another 5 m? I would think that the more water is on top of the pump, the harder it would get to pump even more water inside.