# Water Pressure and 2 dimensional motion

#### EEristavi

Homework Statement
Figure (See below) shows a valve separating a reservoir
from a water tank. If this valve is opened, what
is the maximum height above point B attained by the
water stream coming out of the right side of the tank?
Assume h = 10.0 m, L = 2.00 m, and $\Theta$ = 30.0°, and
assume the cross-sectional area at A is very large compared
with that at B.
Homework Equations
H = Vt - g(t^2)/2
F = P A
P = pgh

$$H = \frac { V^2 - V_0^2 sin \Theta} {-2g}$$
$$H = \frac {V_0^2 sin \Theta} {2g}$$

So, I need to calculate $V_0$

$$P = \rho g \Delta h$$
$$\Delta h = h - L sin \Theta$$

$$F_A = P S_A$$
$$F_A = P S_B$$

Related Introductory Physics Homework Help News on Phys.org

#### BvU

Homework Helper
Perhaps you need another equation ? Look back in your notes or text ... what are the subjects that might be exercised herer ?

#### EEristavi

Yes endeed, I need another equation/approach. However, I cant figure out which one :/

#### BvU

Homework Helper
Ever hear of Bernoulli ?

#### EEristavi

Yes of course.

However, As I understand, Bernouli is used when we have different densities (to "create" "upward" force).

#### BvU

Homework Helper
Not right. One density cuts the cake just as well.

"Water Pressure and 2 dimensional motion"

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