Question

how can we increase and decrease the pressure

Answer 1

HERE YOUR ANSWER....

# INCREASING THE VOLUME ....THE PRESSURE DECREASES...

# DECREASING THE VOLUME ....THE PRESSURE INCREASES ...

HOPE IT MAY HELP YOU....

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Answer 2

HEY DEAR HERE IS YOUR ANSWER ✌✌

We know that pressure= force/area...

area of the pipe is reduced then the pressure must increase... But according to Bernoulli's, the pressure will decrease

Force has nothingn to do with it. It really has to do with energy. A given fluid flow has a finite pool of energy, and that pool comes from the energy stored as pressure and the kinetic energy of the moving fluid.

If the flow encounters a constriction, the velocity must increase due to mass conservation. That increased velocity means the flow has more kinetic energy. That energy had to come from somewhere, so the pressure has to drop to match that energy change

This means that the upstream pressure times cross sectional area must be higher than the downstream pressure times cross sectional area. But the area decrease is not enough to provide all the force necessary. So the pressure must also be decreasing along the pipe.

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