How can a gravity pull an object?

Answer 1

Every time you jump, you experience gravity. It pulls you back down to the ground. Without gravity, you'd float off into the atmosphere -- along with all of the other matter on Earth.

You see gravity at work any time you drop a book, step on a scale or toss a ball up into the air. It's such a constant presence in our lives, we seldom marvel at the mystery of it -- but even with several well-received theories out there attempting to explain why a book falls to the ground (and at the same rate as a pebble or a couch, at that), they're still just theories. The mystery of gravity's pull is pretty much intact.

Answer 2

Gravity is a force of attraction that exists between all objects with mass. The larger an object's mass, the greater its gravitational pull. Objects are pulled towards each other due to this force of gravity, which is why objects fall towards the Earth's center when dropped.