Physics, asked by mari1, 1 year ago

relation between pressure and area


Lorel: plz clear ur question
mari1: ok fine

Answers

Answered by Devinitza
50
The relation between pressure and area is that pressure and area are inversely proportional to each other.
That is when area decreases pressure exerted on that area increases.When area increases pressure exerted on that area decreases. 

reddydhanush32: In a nozzle, the exit velocity increases as per continuity equation Av=constAv=const as given by Bernoulli equation (incompressible fluid). Pressure is inversely proportional to velocity, so we have lower pressure at the exit of the nozzle. But as per definition of pressure, P=F/AP=F/A, i.e., pressure is inversely proportional to the area which contradicts the above explanation on basis of continuity and Bernoulli equation.
Devinitza: hm excuseme?
Answered by abhrodeepc07
19

Answer:

Pressure is inversely proportional to Area holds true for all if given Force is constant

Explanation:

The conditions are not mentioned here, as one of them misunderstood and said normally pressure is inversely proportional to area as P=F/A contradicted by, if a fluid flowing through nozzle is considered according to mass conservation (Area*velocity=constant) so as area decreases velocity increases and then by Bernoulli's equation Pressure is inversely proportional to Velocity that makes pressure to decrease but here you are missing one thing the Force in the nozzle at broader section(more force) and narrower section(less force) has also changed.

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