Class 11PhysicsFluid Mechanics and Surface TensionBernoulli's Theorem and Applications of Bernoulli's Theory
MediumWhy is it dangerous to stand on the edge of a platform near the tracks when a train is passing at high speed? Explain.
(N/A) When a train passes at high speed,the air in contact with the train moves with the same velocity as the train. According to Bernoulli's principle,as the velocity of the air increases,its pressure decreases. This creates a region of low pressure between the person and the train. Since the air pressure further away from the train remains higher,a net pressure difference is created. This pressure difference exerts a force on the person directed towards the train,which can pull the person towards the moving train,making it dangerous.
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