Explain how Archimede's principle is used: a) In designing ships b)In hydrometers and c) In Lactometers
Answers
When any boat displaces a weight of water equal to its own weight, it floats. This is often called the "principle of flotation": A floating object displaces a weight of fluid equal to its own weight. Every ship, submarine, and dirigible must be designed to displace a weight of fluid at least equal to its own weight.
The point at which the surface of the liquid touches the stem of the hydrometer correlates to relative density. The hydrometer makes use of Archimedes' principle: a solid suspended in a fluid is buoyed by a force equal to the weight of the fluid displaced by the submerged part of the suspended solid.
The hydrometer (or lactometer) is based on Archimedes' principle, which states that a solid suspended in a fluid is buoyed by a force equal to the weight of the fluid displaced by the submerged part of the suspended solid. Hence, the lower the density of the substance, the farther the hydrometer sinks.