cross sectional area and pressure reg

[jeyshree]

Hai,

When a liquid passes through an area with smaller cross section why does pressure get reduced?What i understood is that as the contact area has decreased the pressure should have increased.What is wrong in my perspective?Please correct me.Explain me practically.Dont mention the derivations please.Thanks for your reply in advance.Have a great day.

[studiot]

That is a very pretty picture of a venturi. Where did it come from?

 

 

When a liquid passes through an area with smaller cross section why does pressure get reduced?What i understood is that as the contact area has decreased the pressure should have increased.What is wrong in my perspective?Please correct me.Explain me practically.Dont mention the derivations please.Thanks for your reply in advance.Have a great day.

 

This is homework help. Have you been asked to explain as a homework question? We do not do your homework for you, but since you seem to be having trouble with basic understanding;

 

There are two physical principles involved.

 

The law of conservation of mass.

 

The law of conservation of energy. (In this case mechanical energy)

 

What do you know about these?

 

You can answer the question, without maths, using these two physical principles.