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 (Fc) furnished by the weight (wt) of the suspended masses is now keeping the stopper moving in a circular path of fixed radius. It is important to keep two factors constant during the course of this exercise: the mass of the orbiting object and the radius of the orbit. The centripetal force is varied by altering the amount of mass suspended from the string. Note that the mass of the rubber stopper is 0.0045 kg and the mass of the cord is neglected.