The drawing shows three particles far away from any other objects and located on a straight line. The masses of these particles are mA = 325 kg, mB = 580 kg, and mC = 125 kg. Take the positive direction to be to the right. Find the net gravitational force, including sign, acting on (a) particle A, (b) particle B, and (c) particle C. (a) Number Units (b) Number Units (c) Number Units