In relation to mass/gravitational/centrifugal force. Is the increased gravitational force due to the increase in mass of a planet (i.e. earth) from meteorites, etc.. directly proportional to the centrifugal force of the planetary body?
The gravitational force that a planet exerts on another massive body depends only on the mass of the planet, the mass of the body and the distance between them. The centrifugal force, however, also depends on the angular velocity of the planet, which is independent of mass.
So no, there is no proportionality between these two forces.