How do I Measure the pull of gravity?

Answer 1

Gravity always acts both ways at the same time, pulling two objects together. The strength
of the pull depends on the masses of both objects, and the distance between them. A good
way to measure its force is to let the objects get close to each other, to where they're almost
but not quite touching, and then slip something in between them that can measure the strength
of the squeeze.

I'll give you an example of how that works:

The Earth and you are attracted toward each other by gravity, and let's say you want to measure
the gravitational force drawing you and the Earth together. So you slip something in between
your feet and the Earth that can measure the force.

A bathroom scale is a good choice. Put it in between you and the Earth, and it displays the force
of attraction, as gravity squeezes it between the Earth and you. You can read the number right
from the display on the scale. We normally call that number your "weight" on the Earth, and
it's also the Earth's weight on you.