Centre Of Gyration is that point in a body revolving about an axis, into which, if the whole quantity of matter were collected, the same moving force would generate the same angular velocity. - To find the centre of gyration: multiply the weight of the several parts of the body by the squares of their distances from the centre of motion, and divide the sum of the products by the weight of the whole mass, and the square root of the quotient will be the distance of the centre of gyration from the centre of motion.