how do you find the magnitude of the gravitational force that one object exerts on another?

Answer 1

Using Newton's Law of Universal Gravitation,
F = G * M * m / r^2
Where F is the gravitational force, M is the mass of one object, m is the mass of the 2nd object, and r is the radial distance between the centers of mass of each object.

G is the universal gravitational constant,
G = 6.673 E-11 m^3 kg^-1 s^-2

Answer 2

It follows Newtin's law of gravitational attraction. The force between two bodies is:

F = G * m1 * m2 / r^2

G is the universal gravitation constant: 6.67 x 10^-11 newton * m^2 / kg

m1 and m2 are the masses of the two objects

r is the distance between the centers of mass

Answer 3

F=Gm1*m2/r^2

Where F is the gravitational force
G is the gravitational constant 6.67e-11
m1 is the mass of the first object in kg
m2 is the mass of the second body in kg
r is the distance between them in meters

Answer 4

open you book and find something like this:

F = G*m1*m2/r^2

G is a constant, m1 and m2 are the two masses while r is the distance between them.