Pressure can crush iron balls. Is the Mariana Trench really that powerful?

No, this iron ball is under strong pressure, but because it is solid, the surrounding pressure is similar according to the reaction force of the force, so it will not produce very obvious deformation.

Usually, when we swim in the pool or in the sea, do we always feel a sense of oppression, and this sense of oppression will increase with the increase of depth, so that scientists control people to dive to the depth of more than 300 meters, which is the diving limit depth of professional divers. If the ordinary limit diving depth may not exceed 100 meters, because if we break through these limits, the water pressure on the human body will be more and more heavy until it collapses the lungs and eventually leads to death.

With the increase of seawater depth, the water pressure will be higher and higher. Generally speaking, every time the water depth increases by 1 0m, the water pressure on the earth's surface will increase by1atm. At the bottom of the Mariana Trench with a depth of 1 1 km, the water pressure can reach the earth's surface 1 100 atmospheric pressure. Taking ordinary cast iron (including iron, carbon and silicon) as an example, its compressive strength is 2000 atmospheres on the earth's surface, which is equivalent to the water pressure with a water depth of 20 kilometers. Therefore, at the bottom of the Mariana Trench, the iron ball can completely withstand the water pressure there, and it will not be deformed or crushed.

The compressive strength of iron balls has nothing to do with quality. No matter 1 kg, 100 kg or 100 ton, the iron ball will not be crushed in the Mariana Trench. But if it is hollow, the compressive strength of the iron ball may not be so strong. Under the action of water pressure, the iron ball may be squashed or even crushed.