minimum height ?

[HANSCHETI]

In a u shape tube of one inch diameter if we add some mercury(*)
what will be the minimum height of water(: ) to increase the mercury level by 1 inch

|:|...........| |
|:|...........| |
|:|...........| |
|:|...........| |
|:|...........| |
|:|...........| |
|:|...........| |
\*\____ /*/
.\ ******* /

[Enthalpy]

Write some heights of mercury on both sides and of water on one side.

Compute the hydrostatic pressure at the bottom.

Both sides create the same pressure, deduce the necessary water height, remembering that higher mercury at one side means lower at the other.

[Strange]

remembering that higher mercury at one side means lower at the other.

 

Good point. Maybe it isn't as simple as I initially thought ...

[HANSCHETI]

Write some heights of mercury on both sides and of water on one side.

Compute the hydrostatic pressure at the bottom.

Both sides create the same pressure, deduce the necessary water height, remembering that higher mercury at one side means lower at the other.

can you please provide with an example

and formula to calculate other height