-
A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of __________ .
-
- gravitational force between train and man
- illusion of the man
- the centripetal force
- pressure difference due to fast moving air in between
- gravitational force between train and man
Correct Option: D
When a fast-moving train passes a man standing on the platform at rest, the air between train and person also moves with greater speed. This rapidly moving air, by Bernoulli’s principle will have a lower pressure than the still air a few feet away. The still air, having higher pressure, and being behind the man standing close will tend to push him toward the train.
