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There is nothing that is specifically designed to keep the air pressure low under a train. A train is kept on the tracks by gravity, nothing more.

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11y ago

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Why is pressure low under a train?

Pressure underneath a moving train is lower because of the Bernoulli's principle, which states that as fluid (such as air) moves faster, its pressure decreases. The train's movement creates airflow beneath it, causing the pressure to drop.


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A low pressure under a train helps to minimize the drag force caused by air resistance, allowing the train to move more efficiently. It also reduces the risk of creating a partial vacuum underneath the train, which could impact its stability.


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