# How much is the cross sectional area for the tube to fill up the compartment?

1. Dec 5, 2012

### aiklone1314

1. The problem statement, all variables and given/known data
abstract question, but we can assume the
volume,V to be filled is 0.0001m3 and
time for it to filled up water is 60seconds,
water density is 1000kg/m3,
so how much should be the cross sectional area,A for the tube?

2. Relevant equations
Volume flow rate=delta Volume/delta time
Volume flow rate= cross sectional area*velocity of water

Relavant Picture:
When 0.0001m3 of water is filled up in the compartment, the compartment of the verge will move downward as shown in the rightside of the picture.
http://img339.imageshack.us/img339/8789/21885237.jpg [Broken]

Last edited by a moderator: May 6, 2017
2. Dec 5, 2012

### haruspex

You need an equation for how flow rate depends on length of tube, cross-sectional area of tube, pressure difference along the tube and properties of the fluid. See what you can find online.

3. Dec 6, 2012

### aiklone1314

So is this equation is needed to be used?

Volume flow rate= cross sectional area*velocity of water

4. Dec 6, 2012

5. Dec 6, 2012