Newton's Law of Gravitation

Vocab

100

The more mass between the two objects, the ______ force of gravity between them.

Greater

200

The _____ mass the two objects are, the smaller the forces of gravity between them.

Further

300

Universal Gravitation describes the ____ force that exists between every object in the universe that has mass.

Attractive

Formula

100

What is the unit for gravitational force?

Newtons (N)

200

What is the formula for Newton's Law of Gravitation?

Fg = Gm₁m₂/r²

300

What number does Gravitational Constant (G) represent?

G= 6.67x10^-11

Practice

100

Two spherical objects have masses of 200 kg and 500 kg. Their centers are separated by a distance of 25 m. Find the gravitational attraction between them.

= 1.1x10^-8 N

200

Two spherical objects have masses of 1.5 x 105 kg and 8.5 x 102 kg. Their centers are separated by a distance of 2500 m. Find the gravitational attraction between them.

= 1.4x10^-11 N

300

Two spherical objects have masses of 3.1 x 105 kg and 6.5 x 103 kg. The gravitational attraction between them is 65 N. How far apart are their centers?

4.5x10^-2 meters