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Because if you look at the volume it occupies the ship will still weigh less than the same volume of water. The Greek scholar Archimedes realised when he was taking a bath what is now called his 'Law'. It is said that he ran into the street naked shouting "Eureka!" (I've found it!), although this is a legend. In his bath he realised that when an object is placed in water it experiences a force upwards (an 'upthrust') equal to the weight of water it displaces. If the upthrust is more than the weight of the object pulling downwards, the object floats. If the upwards force is too small to counteract the downwards weight of the object, it will sink.
Because of its shape, even though a ship is made from dense materials, it still displaces enough water to create an upthrust larger than the weight of the ship, so it floats. However, if you somehow crushed the ship into a block, although it would weigh exactly the same, because it displaced less water, it would sink.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoGenerally speaking, no. To float, the mass of the floating object has to be equal to the mass of the fluid displaced by that object. Therefore, a steel ship can float on water (even though steel obviously has a density greater than that of water) because the amount of water displaced by the ship (the steel hull and the air inside the hull) is equal to the total mass of the ship. That's the general rule, however there are exceptions. Surface tension in fluids (most notably in water) can be great enough to support some objects of greater density. Note the floating coin demonstration (http://www.YouTube.com/watch?v=uPJRbFW8Nm4).
Wiki User
∙ 12y agoYes, to float, an object must have a net density less then the surrounding water. Although a ship is heavy, the majority of the hull holds huge amounts of air. These pockets of air counteract the ship's density, giving the ship a net density low enough that it can float.
A good illustration of this is with tin foil boats. A tin foil boat will float because the air/boat ratio of the design allows room for more than enough air to counteract the density of the foil. However, if you filled the space that contained the air with water, the ship would sink because there would be no more air left to counteract the foil's density. Plus, you had the additional density of the water.
If you do the math:
Densities:
Air = 1.2 kg/m3
Steel = 7850 kg/m3
Water = 1000 kg/m3
Now assuming that the boat is 100 meters x 100 meters x 1 meter:
Net force the ship is exerting on the water: 2,272,800
Net force the water pushing back: 10,400,000
As you can see this ship will definitely float, because the water is exerting more force than the boat, so the water will end up "pushing" the boat to the surface.
Wiki User
∙ 13y agoRelatively speaking, all water vessels float upon water of the same density.
Wiki User
∙ 12y agoFalse...if it had a greater density, it would sink. Less dense materials float.
Wiki User
∙ 14y agoIf something floats in a substance, it means that it is less dense than the substance it is in. If it were more dense, it would sink to the bottom.
Wiki User
∙ 13y agoLow density substances.
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Which is a property of a substance formed with a covalent bond?
rtgrtgrtgrtgrtgrgrtg
Is a solid have a high or low volume?
Density is dependent on mass and volume. Density is not a fixed constant for all substances either. The measure of density is by substance based on the above factors.
Record how high the foam floats in water?
Record how high the foam floats in water.
If something floats in water does the water have more or less density?
The general rule is that an object will float, if it has less density that the liquid (or gas) in which it is placed. If the density of a liquid is greater, a larger amount of objects will float. Also, the same object will float higher, if it is placed in a denser liquid.
Does mercury have any density?
Very high density
How does the density of each material relate to how high it floats in the water?
if its heavier than water it sinks. lighter floats
How can you separate substances of different densities?
Density Column to Separate Mixtures of SolidsYou could use a density column to separate mixtures of different solids by adding substances that have different densities. Then you would add in the solids, which would land or stop at a substance.
What is a characteristic of water A dissolves ionic substances B high density C Solid form more dense than liquid D high heat of vaporation?
The answer is C. Ice is less dense than water and thus floats.
How do scuba divers use density?
Divers use substances with high density (ie. lead) to help them sink, and substances with low density (ie. air) to help them float. That way they control their bouyancy.
What happens to low density?
If the low density water was put over another fluid of lower density it would sink but if it was put over a high density fluid like Mercury it would floats.
What happens to low density water?
If the low density water was put over another fluid of lower density it would sink but if it was put over a high density fluid like mercury it would floats.
2 What substances float on the surface and which one sinks at the bottom and why?
When two substances mix, but separate with one on the bottom, and one on the top is known as a SUSPENSION mixture. An example of this is oil and water. When mixed, the water settles to the bottom, while the oil remains on top. This occurs because of the difference in density. The substance with a high density sinks to the bottom, while to less dense substance floats on the top.
Which is a property of a substance formed with a covalent bond?
rtgrtgrtgrtgrtgrgrtg
Which makes better packing material a high density or low density?
High density since it is obvious it would be harder to rip, tear, or ruin
Is a solid have a high or low volume?
Density is dependent on mass and volume. Density is not a fixed constant for all substances either. The measure of density is by substance based on the above factors.
What phytsical prperty of substances makes it possible to separate a mixture by spinningit at high speed?
relative density
Why do you need to know the density of things?
To have knowledge about their property in the real physical world. You can also calculate how much mass an object has if you know how big it is. For example: * Low density objects floats on water. * High density objects sink in water.
