Answer: Their masses increases or the distance <u>between</u> them decreases
Explanation:
According to Newton's law of Gravitation, the gravitational force exerted between two bodies of masses and and separated by a distance is equal to the <u>product of their masses</u> and inversely proportional to the <u>square of the distance</u>:
(1)
Where is the Gravitational Constant
As we can see, if <u>one body increases its mass</u> or if <u>both bodies increase their mass</u>, the gravitational force will<u> increase</u> as well.
In addition, is the <u>distance between the two bodies is decreased</u>, the <u>gravitational force will increase</u>.
Therefore:
The gravitational force between two objects increases as <u>their mass increases or the distance between them decreases.</u>