Prove that the loss in weight of a body when immersed wholly or partially in a liquid is equal to the buoyant force (or upthrust) and this loss is because of the difference in pressure exerted by liquid on the upper and lower surfaces of the submerged part of the body.
Fill in the blanks:
(1) A solid is completely immersed in a liquid. The force exerted by the liquid on the solid will be in vertically ………….. direction.
(2) When an object sinks into the liquid, the density of object is ………….. than density of the liquid.
(3) The …………… on unit surface area is called pressure.
(4) The buoyant force is greater if density is ………….. .
(5) The SI unit of pressure is ……………. .
The upward force exerted by a liquid on an object immersed in it is called ________________