A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of ________ . A. Gravitational force between train and man B. Illusion of the man C. The centripetal force D. Pressure difference due to fast moving air in between

The correct answer is: D. Pressure difference due to fast moving air in between.

When a fast-moving train

passes a man standing close to the platform, the air in front of the train is compressed, while the air behind the train is rarefied. This creates a pressure difference between the two areas, which exerts a force on the man. The force is directed towards the train, and it is strongest at the front of the man’s body. This force is what causes the man to feel a pulling sensation towards the train.

The other options are incorrect. Option A is incorrect because the gravitational force between the train and the man is very small and would not be enough to cause the man to feel a pulling sensation. Option B is incorrect because the man is not hallucinating. Option C is incorrect because the centripetal force is a force that acts towards the center of a circle, and in this case, the man is not moving in a circle.