upthrust in fluids archimedes principle density relative density and flotation

Summary - Pressure at a point in a liquid depends upon the depth and on the density of the liquid. The pressure at any depth in a liquid acts equally in all directions. Liquids always find their own level. Pressure applied at any point in a confined liquid is transmitted equally in all th..

Fluids Pressure Upthrust and Flotation..

Archimedes' studied the upthrust acting on a body, when it is partially or completely immersed in a fluid by performing several experiments and then stated the following principle known as the Archimedes' Principle..

Archimedes' Principle - An iron needle sinks in water but a huge ship floats on the surface of water. All objects whether inside the liquid (or fluid) or partially inside, appear to be lighter than in air. This is because liquids (or fluids) exert upward forc..

Record your observations as shown below: Weight of sinker in water = x gf Weight of sinker in water + cork in air = y gf Weight of cork in air = (y - x) gf Weight of cork + sinker in water = z gf Upthrust on cork in water = (y - z) gf The upthrust on cork in water also re..

Select a solid (sinker) which is insoluble in the given liquid. Weigh the sinker in air. Weigh the sinker in water and finally weigh the sinker in the given liqui..

> A solid weighs 50 gf in air and 44 gf when completely immersed in water. Calculate (i) R.D of the solid (ii) upthrust (iii) density of the solid in cgs and SI units. Suggested answer : (i) R.D = 8.33 (ii) upthrust = loss of weight = 6 gf (iii) density in cg..

It is used in designing ships and submarines. The lactometers and hydrometers used for measuring the purity of a sample of milk and for determining the density of the liquids are based on this principle..

Fluids Pressure Upthrust and Flotation..

Consider a solid cylinder of height 'h' and area of cross-section A, to be completely immersed in a fluid of constant density r . The horizontal thrusts on the cylinder balance each other...