d Answer(i) If the mass of one object is doubled then the force between the two objects is doubled. Because force is DIRECTLY proportional to the product of their masses and inversely proportional to the square of the distance between their centres.(ii) If the distance between the objects is doubled then the force between the objects becomes 1/4 th as the force between the objects is inversely proportional to the square of distance between them. And if the distance between the objects is tripled then the force between the object becomes 1/9th._______________________________ KNOW MoreNewton's law of gravitation : states that any particle in the universe attracts the other particle with a force varying directly to the product of the masses and inversely to the square of distances between them.Newton's first law of motion : A BODY will continue in its states of REST or uniform motion unless an external force acts on it. Newton's second law of motion : The rate of change of momentum is directly proportional to the impressed force and acts in the same direction in which the force acts. Newton's third law of motion : For every action there is an equal and opposite reaction.