An object of volume 4m³ is totally immersed in a liquid of density 1030kg/m³. Calculate the up thrust of liquid on the object

Answer 1

weight of fluid (looks like salty water) displaced = force up (Archimedes Principle)
mass of fluid = 4 * 1030 = 4120 kg
so weight of fluid displaced = 4120 * g
on earth g is about 9.81 m/s^2
so 4120 * 9.81 = 40,417 Newtons up force