Two spheres A and B are placed in the arrangement shown below. (a) If mA = 4m and my = 6m, where on the dashed line should a third sphere C of mass 6m be placed so that the net force on it is zero? A B to the left of B between A and B, closer to A to the right of A at the midpoint between A and B O between A and B, closer to B X What should be the direction of the force due to each sphere for the net force on the third mass to be zero? (b) If the distance between the two spheres A and B is 500 cm, find the location for the third sphere C so that the net force on it is zero. 1249.80 X What should be the magnitude of the force exerted by B on C compared to the magnitude of the force exerted by A on C? cm to the right of sphere B