Final answer:
When the mass of object 1 doubles while the distance between the objects remains the same, the new distance between the objects does not change. The mass of object 1 doubles, resulting in an increase in the magnitude of the force between the objects. The mass of object 2 remains unchanged.
Step-by-step explanation:
When the mass of object 1 (m1) is doubled while keeping the distance (r) between the objects the same, the new distance between the objects does not change. The mass of m1 doubles, meaning it increases by a factor of 2. The magnitude of the force between the objects is given by the gravitational force equation: F = G * (m1 * m2) / r^2. Since only m1 doubles, the force between the objects increases by a factor of 2. The mass of object 2 (m2) does not change.