What is Gravity? Definition, Meaning & Example
The force of attraction between any two objects with mass, with the strongest effect between objects of large mass like Earth.
TL;DR: The force of attraction between any two objects with mass, with the strongest effect between objects of large mass like Earth.
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Gravity: The force of attraction between any two objects with mass, with the strongest effect between objects of large mass like Earth.
Explanation
Gravity is one of the four fundamental forces in nature. All objects with mass attract each other gravitationally, but this force is only noticeable when at least one object is extremely massive. Earth's gravity pulls objects downward with an acceleration of 9.8 m/s squared. This force keeps planets orbiting the sun, the moon orbiting Earth, and objects on Earth from flying away into space. Without gravity, life on Earth would not exist.
Example
When you drop a pen, gravity pulls it downward to the ground. The same gravity that pulls your pen down also keeps the moon orbiting Earth and Earth orbiting the sun.
Frequently Asked Questions
Does gravity act only on Earth?
No, gravity exists everywhere in the universe between all objects with mass. It keeps galaxies together and planets in orbit.
Why do astronauts appear weightless in space?
Astronauts in orbit are actually in free fall toward Earth while moving forward, creating the sensation of weightlessness. Gravity is still pulling on them.
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