Question

Question 4 Two boats are traveling parallel at speed 7.0 m/s in a freshwater lake. But the water between them is accelerated to 9.0 m/s. What is the pressure difference across the width of each boat? v large n Pol

Answer 1

let v = 9.0 m/s
vo = 0 (speed of water on the otherside)

let Po is the pressure where water is at rest.

P is the pressure where water is flowing.

we know, density of water, rho = 1000 kg/m^3

use Brnoullis theorem,

Po + (1/2)*rho*vo^2 = P + (1/2)*rho*v^2

Po - P = (1/2)*rho*(v^2 - vo^2)

= (1/2)*1000*(9^2 - 0^2)

= 40500 Pa <<<<<<<<<---------------------Answer