I had a problem solving for part b of this question: objects with masses of 110 kg and a 410 kg are separated by 0.380 m. (a) find the net gravitational force exerted by these objects on a 30.0-kg object placed midway between them. (b) at what position (other than infinitely remote ones) can the 30.0-kg object be placed so as to experience a net force of zero?