How does the size of the force exerted by earth's gravity on a car compare with the size of the force the car exerts on Earth?

Answer 1

The magnitude of the force is exactly the same (Newton's Third Law).

Answer 2

Because the center of the sun is about 23,467 times as far from me as the center

of the earth is. That means that each kilogram of mass in the sun attracts me with

a force that is

1 / (23,467)2 = about 0.0000000018

as strong as the gravitational force that attracts me toward each kilogram of

mass in the earth.

Now it's true that there's a lot more mass in the sun drawing me that way.

Sun's mass = 1.98 x 1030 kilograms

Earth's mass = 5.97 x 1024 kilograms

Ratio of the sun's mass to the earth's mass = (1.98/5.97) x 106 = 331,600 .

So finally, the sun attracts me 331,600 times stronger than the earth does

because of its greater mass, but only 0.0000000018 as strongly because of

its greater distance.

When I roll all the numbers together, I find that whereas the force that draws

me toward the center of the earth (my "weight") is 185 pounds, the force that

draws me toward the sun is roughly 1.78 ounces .

Answer 3

Because the gravitational force of attraction between every two objects is proportional

to the product of both masses, and the product of (my mass) times (earth's mass) is

greater than the product of (my mass) times (a car's mass).

Answer 4

A gravitational force exists between every two mass objects.
The force is the same on both objects.

Answer 5

Because the Earth has somewhat more mass than my house has.

Answer 6

The magnitude of the force is exactly the same (Newton's Third Law).