Aforce fix).0x25.0x) n acts on a particle. how much work (in j) does the force do on the particle as it moves from x = 4.0 m to x = 6.0 m? 203.33 (a) (b) picking a convenient reference point of the potential energy to be zero at x0, find the potential energy for this force. (use the following as necessary: x. assume u(x) is in joules and x is in meters.