# Fluid Mechanics - U-tube and mercury

by jkb
Tags: fluid, mechanics, mercury, utube
 P: 3,243 i think it should be: $$\rho_{w}h'g+\rho_{Hg}h'g=\rho_{Hg}hg$$ where h'=20 cm and h is the height of the right arm. in order to find the difference i think you need this equation: x-h'=h-x but im not sure im right here, ive done this stuff in highschool two years ago.