f =- P( x ) Force density
P( x ) = ρ ( x ) .g.h( x 0 ) Pressure
P( x ) = ρ x .g.h. u x
f =- ρ x .g.h. u x
But g..... Again.... and again
f 1 - f 0 =- ρ 1 .g. h 1 + ρ 0 .g. h 0 =g.( ρ 0 . h 0 - ρ 1 . h 1 )
f 1 - f 0 =g.( ρ 0 . h 0 - ρ 1 . h 1 )
f 1 - f 0 =g.( ρ 0 . h 0 - ρ 1 . h 1 ) (1)
There is a difference of density.... But g to make force.....