2006-09-10 00:50:04 · 21 answers · asked by walliswinston 1 in Science & Mathematics ➔ Other - Science
same reason why an airplane that weight tones dosent fall out the sky, but if a man jumps off a building he goes straight down,...perhaps its just us humans who are jinxed
2006-09-10 00:57:44 · answer #1 · answered by cassey s 3 · 0⤊ 1⤋
Displacement, the volume of water the ship displaces weighs the same as the ship, if the amount of water a ship displaces doesn't exceed its weight before the water reaches the deck then it sinks, hence the plimsole line on the side of ships to mark the maximum level the ship can sink in the water while the ship is being loaded, the plimsole line also accounts for normal wave heights.
The human body is 90% water so is quite dense, but floating is possible depending on the salinity of the water.
2006-09-10 01:00:13 · answer #2 · answered by strawman 4 · 0⤊ 0⤋
The ship is not solid
The weight of the water displaced by the volume occupied by the ship is less than the ship so it floats
example a gallon of milk(or water) is about 8 lbs (I think)
empty it out and the jug floats and them some.
The man is more solid - he weighs more than the water he displaces and sinks without gills to breath (he drowns)
2006-09-10 17:03:28 · answer #3 · answered by Intersect 4 · 0⤊ 0⤋
Because the water displaces more that it's weight in water.
Ie; a box weighing a tonne may displace 2 tonnes of water, this means that it would float. If it was the other way round; ay by making the walls of the box three times as thick - it weighs three tonnes and the water 2 - then it would sink.
A human on the other hand, would - with their lungs full of air, would displace more than their weight in water. With little or no air in their lungs (ie; full of water) would displace less than their weight and sink like a dense thing.
2006-09-10 00:53:02 · answer #4 · answered by Felidae 5 · 0⤊ 0⤋
The deliver doesnt sink because of the fact the burden in line with unit element of the deliver is decrease than the buoyancy of the water pushing it up. Water likes to be flat and a deliver interior the way makes it opt to push the subject out.. in all possibility the appropriate thank you to describe buoyancy. Planes can fly as they're "lifted" into the air. The wing shape makes the air tension flying over the desirable very low certainly.. If the stress is low adequate it is going to boost any weight up.
2016-12-18 07:57:09 · answer #5 · answered by ? 4 · 0⤊ 0⤋
ship don't sink because of what we called buoyant force (not particular with the spelling). it is the upward force of the water that prevents the ship from sinking... Man drowns because he don't stay consistent in the water or the density of the water is being affected..... Try to ask a physics teacher...
2006-09-10 00:59:27 · answer #6 · answered by cha 1 · 0⤊ 0⤋
Its all to do with volume.... The more weight you put in salty water the more it floats (depending on shape and size etc).... The less weight the more it sinks... if you were to do the same in no salty water.... you would get a drfferent out come....
2006-09-10 00:57:49 · answer #7 · answered by cool 1 · 0⤊ 0⤋
Buoancy (aka Archimedes' Principle)
http://en.wikipedia.org/wiki/Archimedes%27_Principle
2006-09-10 00:57:57 · answer #8 · answered by mahgri 3 · 0⤊ 0⤋
Ur question is like : Why an aeroplane doesn't face any problem while flying, but man can't fly even an inch high?
2006-09-10 03:06:19 · answer #9 · answered by Innocence Redefined 5 · 0⤊ 0⤋
because ships are coated with wax, which repels water. If only the builders of the titanic knew this.
2006-09-10 00:52:58 · answer #10 · answered by mymindsablank 1 · 0⤊ 0⤋