- #1
ntsai91
- 1
- 0
Homework Statement
Suppose a bottle filled with water, which has a hole close to the bottom
as shown in the figure. Express your answer with y1 , y2, and Po
(atmospheric pressure). Assume A1 << A2.
1) When a cap is closed, find the condition, where no water leaks out form the hole; v1=0
2) Now consider the cap is open, estimate the velocity of the water flowing out from the hole.
Homework Equations
P1 + ρgy1 + 1/2 ρv12 = P2 + ρgy2 + 1/2 ρv22
The Attempt at a Solution
1) Zero-d out the two terms with velocity. Got up to
P1 - P2 = ρg (y2-y1)
not sure what the question is really looking for...
2) I got v1 = √(2g(y1-y2)/((A12/A22)-1))
is this right?