How do you measure the force of Earth's gravity on an object?

Answer 1

Gravity always works equally in both directions. The Earth and the object each feel

a force. The two forces attract each object toward the other one, and they're equal.

The amount of force is what we call the object's 'weight' on Earth. Nobody ever mentions

the fact that the Earth's weight on the object is the same number.

-- The easiest way to measure the force attracting you toward the Earth is

by using a bathroom scale.

-- The easiest way to measure the force attracting the Earth toward you is

by turning the scale over.

-- You'll find that whatever you weigh on Earth, the Earth weighs the same

on you.