When person is drowning they begin to sink. Water goes in the mouth. The body is dead. But then the body comes to float as if it weighs nothing. How is this? The body is still dead weight. I know this is what happens. But what I don't get is why and how. Then of someone pulls the body out of the water it's dead weight!
I am wondering if the answer is gravity. And I am truely serious about this thought. I'm sure there is a right answer but I thought to ask you all instead of researching.
Answers:
well you asked -so don't be offended / disgusted
when you die your body rots it creates gas which makes you buoyant and brings you up!
it amazes me how people drown as if you are holding a breath, you are very buoyant - you would not believe how much lead i wear as a scuba diver to cause me to sink!
The way I understand it is, the body starts to decompose and this puts off a gas as the body bloats. Then the body comes up.
the buoyancy of water will keep the body afloat.
water will float the volume of amount of weight of water that is beneath the surface of the water. water weights 62 lb/cubic ft. This is what allows a ship to float. it has a large amount of volume beneath the surface. your body floats because it weighs less than the amount of water beneath the surface (dead or alive). a drowning person can float if he doesn't move. If you lie on you back and arch your back you can float in a pool.
A body will sink as the air in its lungs is replaced by water, however, when any organism dies, it goes through putrefaction, the series of chemical, physical, and biological changes that causes the body to decompose.
When a body dies, the bacteria that, normally, live in the digestive system continue to feed on the proteins and sugar in the body's soft tissues, and continue to excrete gasses including carbon dioxide, ammonia, hydrogen, and methane. These gasses accumulate in the body's cavities, and, if it's submerged in water, eventually, these gasses cause it to start rising.
A footnote: These gasses are present in the body when it dies naturally. During ancient times, people began to believe in the undead (vampires). They would exhume a body that they believed was undead and drive a stake through its heart. Sometimes, the body would groan because of the release of the gasses from the decomposing body. This groaning instilled the belief that the undead truly existed.
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