Question

it is known that the sg (specific gravity) of oil is 0.95 sg of mercury (hg) is 13.6. h1 = 90cm h2 = 15 cm h3 = 50 cm

Answer 1

We know that ,

specific gravity is related with density as

density of substance= specific gravity $\times$ density of water

here ,

and pressure relation with density is

$P_1=\rho gh_1$ so from this relation we can find pressure and density of substance

density of substance =$0.95\times 1000=950 kg/m^3,$

$P_1=950\times 9.8\times$ 0.9=8379 Pa