Answer:
B. 0.75F'
Explanation:
The force due to gravity between two objects is:
F' = Gm₁m₂ / r²
where G is the gravitational constant,
m₁ and m₂ are the masses of the objects,
and r is the distance between them.
If r doubles and one mass triples:
G (3m₁m₂) / (2r)²
3/4 Gm₁m₂ / r²
3/4 F'
