Physics, asked by anushamidatana8575, 10 months ago

Why does dead bodies float on water?

Answers

Answered by fad54
0
Initially, bodies will likely sink to the bottom, but as bodies decompose and gasses are released in the body, the corpse will rise back to the surface as a result of buoyancy.

The reason that living human beings naturally float is because of the air in our lungs. The air acts as a buoyant force for the body, making it impossible for you to simply lie down at the bottom of a swimming pool. In the case of a corpse, however, they have no control over whether their lungs fill up or not. If the corpse falls in the water facedown, they might never sink to the bottom, as there will be no real chance for the air to escape from the lungs. However, if a corpse is put into the water on their back, air can escape, water can take its place, and the body will quickly sink.

If a person drowns, they don’t necessarily die because water fills up their lungs; often, the body will asphyxiate itself because the windpipe closes up against the presence of water. In this case, a body could potentially float for longer periods before eventually sinking to the bottom. However, given that almost every dead body falls beneath the surface eventually, once all the air is expelled from the lungs

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Answered by CaptainSiddiquee
0


Dead body in water sinks when water enters into the lungs. Once submerged, the body stays underwater for sometime. Then there will be release of gases like methane, carbon dioxide and hydrogen sulphide  due to the bacteria present. Because of this the upper portion of the body (torso), which contains the most bacteria, bloats more than the head and limbs. The most buoyant body parts rise first, leaving the head and limbs behind. As the density of the head is more than that of water, it remains immersed in water
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