An object is attracted toward the origin with a force given by Fx = k/x2. (Gravitational and electrical forces have this distance dependence.) (a) Calculate the work done by the force F. when the object moves in the x-direction from X, to X2, If X2 > X1, is the work done by F. positive or negative? (b) The only other force acting on the object is a force that you exert with your hand to move the object slowly from X, to X2' How much work do you do? If x2, > x1 is the work you do positive or negative? (c) Explain the similarities and differences between your answers to parts (a) and (b).