The drawing shows three particles far away from any other objects and located on a straight line. the masses of these particles are ma = 363 kg, mb = 517 kg, and mc = 154 kg. find the magnitude and direction of the net gravitational force acting on each of the three particles (let the direction to the right be positive).
particle a is 0.5m from b and b is .25m from all in a astraight line