![]() "You can get out using this technique, if you do it slowly and progressively. This creates a space between the legs and the quicksand through which water can flow down to dilate the sand," he explained. "The way to do it is to wriggle your legs around. So how do you get out? Don't ask your friends to tug on you they're likely to pull you "into two pieces if try hard to pull out," said Bonn, a physics professor at the Van der Waals-Zeeman Institute at the University of Amsterdam. "I would say there would be some pressure on the chest, but not enough to cause serious trouble." If you do step into quicksand, says study co-author Daniel Bonn, you'll only sink in a little deeper than your waist. The authors estimate that the force needed for someone to pull their foot out of quicksand at a speed of a centimeter a second would be the equivalent of that required to lift a medium-size car. These two scenes are also available at Club MPV and also here and here. On appears on Alone in the Quicksand, and the other on Quicksand, This Way. In any case, she did two memorable scenes for us. Water has to be introduced into the sand sediment to loosen it, and this requires considerable amounts of force. I could go at length about Krystal (she was amazing), but maybe others could pitch in here. It's the difficulty of moving this dense sand that causes the problem. All of her deaths in her quicksand videos are staged, meaning she cant die from it. The increase is due to the formation of sand sediment, which has a very high viscosity. No, she still makes new videos to this day. ![]() Difficult to Get Out Ofīut if quicksand becomes less viscous as you struggle, why is it so difficult to escape? The reason, explain the study's authors, is that after its initial liquefaction, quicksand's apparent viscosity (thickness or flow resistance) increases. But when they shook the container a bit harder, the ball descended to the bottom. When they shook it only a little, the bead stayed floating on top. At rest, the bead remained on the surface, despite aluminum's higher density.īut then scientists started shaking the container. But a piece of aluminum will float on top of quicksand until motion causes the sand to liquefy.ĭuring their study, researchers placed an aluminum bead on top of a container of laboratory-created quicksand. This causes a trapped body to sink when it starts to move. She already spent an hour sinking in the mud and dirtying all her body, so she decides to stop getting deeper. Aluminum, for example, has a density of about 2.7 grams per milliliter. At higher stresses, quicksand liquefies very quickly, and the higher the stress the more fluid it becomes. While she sinks more and more, Krystal begins to spread some clay on her body, dirtying her arms and her boobs in the process. You would descend about up to your waist, but you'd go no further.Įven objects with a higher density than quicksand will float on it-until they move. ![]() At that level of density, sinking in quicksand is impossible. But human density is only about 1 gram per milliliter. Quicksand has a density of about 2 grams per milliliter.
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