Question

Why linear distance of a latitude is more at the pole

Answer 1

Everyone knows that the Earth rotates on its axis, which is the reason for day and night. So, its the rotation of the earth which generates a kind of centrifugal force which is responsible for the flattening of the earth at the poles and bulging out at the equator. Now it is natural for you to ask about centrifugal force.

Centrifugal force is a force which pulls things outwards. It is the force which prevents electrons form falling in the nucleus of an atom.

There are many daily life uses of centrifugal force. It is used in a washing machine, a grinder, and you might have experienced it while you were on a merry-go-round. But if you wanna prove its existence, here's a simple and fun experiment.

Take two transparent plastic cups and two ping pong balls. Put each of them in each glass, then join and seal the open ends of the glasses. When you spin it on a flat surface, you observe that the balls are always going to the base of the bottle; thereby proving the existence of centrifugal force.

So, by all this, we conclude that centrifugal force is responsible linear distance of a degree of latitude at the pole to be longer than at the equator.