Question

A large tank is filled with water to a depth of d = 18 m. A spout located h = 13 m above the bottom of the tank is then opened as shown in the drawing. With what speed will water emerge from the spout?

Answers

drwls
The pressure of water at the hole location is

P = (rho)gH + Po

where Po is atmospheric pressure

The Bernoulli equation tells you that

(1/2)(rho) V^2 = P - Po = (rho) g H

The water density (rho) cancels out, so

V = sqrt (2 g H)

H is this case the the height of water ABOVE the hole, which is 5 m, not h=13 m

Rob
9.8

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