Centrifugal force is a fictitious force.

This is centrifugal force, which Newton viewed as absolute motion.

This is centrifugal force; Newton viewed it as absolute motion.

As the years progressed, Newton completed his work on universal gravitation, diffraction of light, centrifugal force, centripetal force, inverse-square law, bodies in motion and the variations in tides due to gravity.

Our planet is pudgier at the equator than at the poles by about 70,000 feet. This is due to the centrifugal force created by the earth’s constant rotation.