We consider wastewater treatment as a water use because it is so interconnected with the other uses of water.
Definition of Centripetal Force. Centripetal force is a force that makes an object follow a curved path. The direction of the force is oriented at a right angle to the direction of travel of the object, toward the center of the circle along which the object is moving.
The centripetal force is the only real force. The centrifugal force is something that occurs as a result of being inside a rotating (non-inertial) frame. Shifting to an inertial frame demonstrates there is only a centripetal force. G-force is just a term to reference how many multiples of g (9.8m/s^2) are in a force. It is commonly used in discussions of centrifugal force but could be applied to any force. Similarly, any force can be centripetal.