Explanation
- It is a balancing point of a body .
- It is a point where whole mass of a body is supposed to be concentrated.
- Centre of mass always lie towards heavier part of a body.
- Centre of mass may lie inside , outside or on the body.
Centre of mass for a uniform rod lie at the mid point , Where as for sphere ,disc it is lie at its center .
Centre of mass for Equilateral triangle lie at centroid .
Centre of mass formula
centre of mass for two particle system formula is given by :