The gravity model is a predictive analytical framework used primarily in economics and geography to estimate the trade flow or interaction between two entities, often countries or regions, based on their economic size and distance apart. It is inspired by Newton's law of gravitation, positing that larger economies exert greater 'gravitational pull' and that distance acts as a frictional force reducing interaction.

Gravity Model

gravity model

predictive analytical framework

trade flow

interaction between two entities

economic size

distance apart

Newton's law of gravitation

larger economies

Gravitational pull is the attractive force exerted by a massive object on another object due to their masses and the distance between them, as described by Newton's law of universal gravitation. This force is responsible for the orbits of planets, the tides on Earth, and the structure of the universe on a large scale.

gravitational pull

Frictional force is a resistive force that acts opposite to the direction of motion when two surfaces are in contact. It is essential for everyday activities, providing the necessary grip for walking and driving, but also causes wear and energy loss in mechanical systems.

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