why is it that ship does not sink?

Answer 1

The concept that makes a ship float is called "displacement".

A true ship (versus something you build and test in your bath tub that is very light) is made in a way that allows the weight of the ship to displace across the whole length of the ship.

The makeup of a "hull" (the bottom of the ship), allows the weight of the ship to spreadout in many directions (vectors) that reach well beyond the ship. This transference of weight allows the ship to have "buoyancy" which allows the ship to stay afloat.

Hope that helps.

TBG

Answer 2

It is called water displacement.

As long as the water does not flow over the top rails of the ship, the water displacement will hold up the ship. In the case of sinking ships, then we get the oceans to rise and make people think that global warming-the greenhouse effect or a million other excuses to think that the Earth is flooding itself.

Do you have even the remotest possible estimate of how much crap we humans put inyo the oceans on a daily basis? Artificial reefs, ships and boats sinking, cars running off into the water, what about the military? They put several hundreds of gallons of waste water into the ocean on a daily basis. I have personally seen it and I will never go swimming in the ocean again.

No wonder the oceans are rising.

Answer 3

Because buoyant force B equals the weight W of the ship. In which case the net force f = B - W = 0 = ma; where m is the mass of the ship and a = 0, the acceleration up/down of the ship. Since net force is zero, there is no acceleration and the ship will not move up/down, where down means to sink.

Buoyant force is equal to the weight of the water displaced by the volume of that part of the ship that is below the water line. If the volume of the ship below the water line for a floating ship is V, then the weight of the displaced water is B = rho V; where rho is the weight density (Mg/V) of water.

Thus f = ma = B - W = rho V - mg = (Mg/V) V - mg = (M - m)g = 0 when the ship is floating. And we can see that the mass of the displaced water (M) is the same as the mass of the ship (m) when a ship is floating.

Answer 4

Some ships, of course DO sink. In general, a ship is bouyed up by a force equal to the weight of the water it displaces.

Answer 5

Anything does not sink if it is less dense than water.

Particularly, this means that the amount of water displaced out of the way by the part of the hull under the water weighs as much as the whole ship, but takes up less volume.

Please note that weight and mass are not identical terms.

Answer 6

Simple as with anything that tends to float. It has a very large surface area. This evenly spreads out the pressure and weight of a ship along the water to give it balance.

Another reason is the fact the interior of any ship traps air within it. This makes it lighter because like a bubble in a glass of coke the air will always rise to the surface.

Answer 7

Any ship will sink if it takes on enough water or cargo to make it heavier than the volume of water it displaces.

Answer 8

Mostly because of the surface tension of the water. All water molecules are attracted to other water molecules. At the surface of the water, this means they form a kind of "skin" on the water from the tension of their attraction alone.

A ship, if it is broad enough, and the weight of it is stable, will displace only a small amount of water from underneath it (comparative to the ship's size). This imparts bouyancy to the ship.

Answer 9

When a ship displaces a volume of water equal or greater than its mass it can float. It has to have the proper shape to displace this water, and not let the water in.

Answer 10

Because the ship is lighter in weight than the watter displaced by the hull of the ship.