what is archimedes principle?

Answer 1

Archimedes' principle

Archimedes' principle, principle that states that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid. The principle applies to both floating and submerged bodies and to all fluids, i.e., liquids and gases. It explains not only the buoyancy of ships and other vessels in water but also the rise of a balloon in the air and the apparent loss of weight of objects underwater. In determining whether a given body will float in a given fluid, both weight and volume must be considered; that is, the relative density, or weight per unit of volume, of the body compared to the fluid determines the buoyant force. If the body is less dense than the fluid, it will float or, in the case of a balloon, it will rise. If the body is denser than the fluid, it will sink. Relative density also determines the proportion of a floating body that will be submerged in a fluid. If the body is two thirds as dense as the fluid, then two thirds of its volume will be submerged, displacing in the process a volume of fluid whose weight is equal to the entire weight of the body. In the case of a submerged body, the apparent weight of the body is equal to its weight in air less the weight of an equal volume of fluid. The fluid most often encountered in applications of Archimedes' principle is water, and the specific gravity of a substance is a convenient measure of its relative density compared to water. In calculating the buoyant force on a body, however, one must also take into account the shape and position of the body. A steel rowboat placed on end into the water will sink because the density of steel is much greater than that of water. However, in its normal, keel-down position, the effective volume of the boat includes all the air inside it, so that its average density is then less than that of water, and as a result it will float.

Answer 2

The ancient Greek scientist, Archimedes of Syracuse, first discovered the law of upthrust, hence it is sometimes called Archimedes' principle: Hiero the second asked Archimedes if he could find out if the gold crown he has gotten from the goldsmith was pure gold. Archimedes knew that all he has to do was determine whether the density of the crown matched the density of gold. Archimedes measured the mass easily with a balance. He later found out how to get the volume of the crown while in the sauna. A solid can displace water out of a container. To find the volume all he had to do was measure the volume that came out of the container when he put the gold crown in. Thus he found out the goldsmith had tried to cheat the king with a mixture of gold and silver for his crown

The upthrust is equal to the weight of the displaced fluid.
The weight of the displaced fluid is directly proportional to the volume of the displaced fluid (specifically if the surrounding fluid is of uniform density). Thus, among objects with equal masses, the one with greater volume has greater buoyancy.

Suppose a rock's weight is measured as 10 newtons when suspended by a string in a vacuum. Suppose that when the rock is lowered by the string into water, it displaces water of weight 3 newtons. The force it then exerts on the string from which it hangs will be 10 newtons minus the 3 newtons of buoyant force: 10 − 3 = 7 newtons.

Answer 3

Archimedes Priciple states that "When a body is partially or completely immersed in a fluid it experiences an upthrust which is equal to the weight of the fluid displaced".

THERE ARE MANY APPLICATIONS OF ARCHIMEDES PRINCIPLE
1)TO KNOW WHETHER A GIVEN SOLID IS LIGHTER OR HEAVIER THAN THE GIVEN LIQUID.

Answer 4

Archimedes Priciple states that "When a body is partially or completely immersed in a fluid it experiences an upthrust which is equal to the weight of the fluid displaced".

Answer 5

His principle is that something which floats must be "displacing"
an equal volume of water, and therefore will experience a force equal to the weight of that water. So the body floats equal to
the quantity of water that weighs the same amount as it does. I'm learning this now is physics class

Answer 6

it states that when a solid is immersed into water the volume displaces by it is equal to the volume of part of the body immersed in it

Answer 7

it is to do with upward thrust exerted by water on any object that floats in it.

Answer 8

http://frcc.cc.co.us/docs/cms/009_PHY_211-ARCHIMEDES_PRINCIPLE_2004.pdf