If you throw a bar of steel in water?

Question

If you throw a bar of steal in water it sinks. But how can a ship like titanic float when it weighs about 30 tons

Answer 1

A lot of the area inside the ship is hollow . Take how much water the ship displaces and weigh it. If it weighs more then the ship the ship will float if the water weighs less then the ship it will sink Displace means how much water is moved when the ship is put in water. It's all about density if you have several things exactly the same size the heaviest one is the most dense and if something is more dense then water it will sink.

Answer 2

Hi. It is amazing to think about it isn't it?

But the secret is the very fact that you said " a bar
(meaning solid) of steel."

The Titanic was not solid steel. There was lots of open
space inside of it for dining rooms, staterooms, engine
rooms, fuel tanks, kitchens, etc. So there was a lot more
air in the hull than is in a solid block of steel.

The actual idea you need to focus upon is the weight of
volume of water the object displaces when immersed
into water, versus the object's actual weight. If the weight of the water displaced is more than the weight of the object, the object will float. If the object weighs more
than the weight of the water it displaces, the object
will sink.

To give you an example...If you took the bar of steel in
your example and rolled it into a large sheet of metal,
then formed the sheet into a box (with no leaks) the chances are pretty good that the box would float. I
have left some room for doubt because we didn't
specify the exact size of the box. If the box was very
small and had thick sides, it might not float. make the sides thinner and therefore the box bigger, and it might very well float.

A gallon of water weighs about 8 lbs. A gallon of water
takes up 231 cubic inches of space. So if you have
an 8 Lb object that takes up more than 231 cubic
inches it will float. Or, going the other way, if you had
a 231 cubic inch object that weighed less than 8 Lbs., it would float also.

An inner tube floats in the water because it is very light.
If you push it down into the water, you displace more water. The pushing action effectively adds more weight
for the time period that you actually push down.

So, in conclusion, while the Titanic weighed a lot, when
sitting in the water, it displaced lots more water weight than the weight of the vessel.

Answer 3

Archimedes Law says an object will float if it displaces a weight of water equal to its own weight. The shape of the hull and the areas that are spaces filled with air cause the ships to float.

Answer 4

take a bar of steel and hollow it out...it will float as well...boyance...the air on top equalizes with the water pressure under it.

Answer 5

Try this website http://www.pmpba.org/index_008.htm

Answer 6

DISPACEMENT