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.
A force always causes the centripetal acceleration. For a swingball (or tetherball) game, it is the tension in the string. For a satellite, it is the force of gravity. For a car moving around a corner, it is the frictional force between the car and the road.