Question

shows the water steadily in a pipe of a varying cross section..the cross section at a point A is 1 cm² and ay a point B is 30 cm² the point A and B are in the same horizontal plane. if the speed of the water A is 15cm/s calculate the difference in pressure between point A and B. ​

Answer 1

Explanation:

Let the velocity at x = vx and that at y = vy.

By the equation of continuity, vxvy=1.5cm23cm2=2

By Bernoulli's equation,

Px+21pvx2=Py+21pvy2

or,Px−Oy=21p(2vy)2−21pvy2=23pvy2

or, 600m2N=23(1000m3kg