Here's why it's so weak:
* Small mass: Small objects have very little mass compared to, for example, the Earth. This means the gravitational force they exert is very small.
* Short distance: The distance between two small objects is also very short. The further apart objects are, the weaker the gravitational force.
The force of gravity between two people standing next to each other is practically undetectable.
Here's a simplified explanation:
Imagine gravity as a "pulling" force. The bigger the object, the stronger its "pull". Since people are small, their "pull" is very weak. And because they're so close together, that weak pull is almost unnoticeable.
However, even though the gravity between small objects is weak, it is still present. It's just that the force is so tiny it's overshadowed by other forces like friction, air resistance, and electromagnetic forces.
To illustrate how much weaker gravity is between small objects, consider this:
* The gravitational force between the Earth and the Moon is strong enough to keep the Moon in orbit.
* The gravitational force between two people standing next to each other is so weak, it wouldn't even be noticeable if you were to measure it with extremely sensitive equipment.
In essence, while gravity is a fundamental force that affects everything in the universe, its effect between small objects is so small that we can safely ignore it in most everyday situations.