Bernoulli’s
Eqn/Energy Conservation (cont.)
Example 2: If the tank has a cross-sectional area of 1 m2, estimate the time required to drain the tank to level 2.
h(t)
1
2
First, choose the control volume as enclosed
by the dotted line.
Specify h=h(t) as the water
level as a function of time.
0
20
40
60
80
100
0
1
2
3
4
time
(sec.)
4
2.5e-007
h
(
)
t
100
0
t
