Centre of mass

In <a href="https://en.wikipedia.org/wiki/Physics" title="Physics">physics</a>, the center of mass of a distribution of <a href="https://en.wikipedia.org/wiki/Mass" title="Mass">mass</a> in space is the unique point where the <a href="https://en.wikipedia.org/wiki/Weight_function" title="Weight function">weighted</a> relative <a href="https://en.wikipedia.org/wiki/Position_(vector)" title="Position (vector)">position</a> of the distributed mass sums to zero, or the point where if a force is applied it moves in the direction of the force without rotating. The distribution of mass is balanced around the center of mass and the average of the weighted position coordinates of the distributed mass defines its coordinates. Calculations in <a href="https://en.wikipedia.org/wiki/Mechanics" title="Mechanics">mechanics</a> are often simplified when formulated with respect to the center of mass. It is a hypothetical point where entire mass of an object may be assumed to be concentrated to visualize its motion. In other words, the center of mass is the particle equivalent of a given object for application of Newton's laws of motion