Two objects are placed 75 m apart. If the two objects have masses of 3.6 kg and 3.5 kg, what is the force of attraction between the objects?

Question

Quizplus · Accepted Answer

Using the formula for gravitational force:
F = G(m1m2)/r^2
where:
F = force of attraction
G = gravitational constant = 6.674 x 10^-11 N•m^2/kg^2
m1 = mass of object 1 = 3.6 kg
m2 = mass of object 2 = 3.5 kg
r = distance between the centers of the objects = 75 m

Plugging in the values:
F = (6.674 x 10^-11 N•m^2/kg^2)(3.6 kg)(3.5 kg)/(75 m)^2
F = 1.48 x 10^-13 N
F = 1.5 x 10^-13 N (rounded to one significant figure)

Therefore, the answer is D, 1.5 x 10^-13 N.

Two Objects Are Placed 75 M Apart