The gravitational force between the two objects is calculated through the equation,
F = Gm₁m₂/d²
where F is the gravitational force, G is constant (equal to 6.67 x 10^-11), m₁ and m₂ are masses in kg and d is distance is meters.
Substituting the known values,
F = (6.67 x 10^-11)(15 kg)(0.090 kg)/ (0.11 m)²
F = 7.441 x 10^-9 N
ANSWER: 7.441 x 10^-9 N