Spark image
Centre of gravity



All objects are made up of millions of tiny particles, each one being acted upon by gravitational attraction. All these tiny forces can be added together to make one force called the weight of the body (W).

The point in the body where this force acts is known as the CENTRE OF GRAVITYof the body (G).

The sum of the moments of all the tiny forces about the centre of gravity is zero. The centre of gravity is in the middle of the object if the object is symmetrical like a ball, but not if it is asymmetrical like a spoon.

 
 
 
© Keith Gibbs 2009