why do we have gravity on earth?

Any object with mass has gravity; the Earth has mass, therefore it has gravity.

"Gravitation, or gravity, is a natural phenomenon in which objects with mass attract one another. In everyday life, gravitation is most familiar as the agent that gives weight to objects with mass and causes them to fall to the ground when dropped. "

Because Earth has mass.

I can't explain it much, and I am not much of an expert.

But mass either creates gravity or attracts it, or bends space time................whatever.

Scratch whatever I just said. What was I thinking..saying Gravity can be created, foolish!

Bottom line, Earth has mass, so there is gravity.

This Site Might Help You.

RE:

why do we have gravity on earth?

I have been wondering this for quite a while and i want to find the right answer. can someone help?

Google it.

That is a very theoretic question and hard to answer without knowledge of what your science background is.

In short, Earth is big it attracts stuff to it = Gravity.

Well basically all atoms in the universe interact with one another, however weakly.

The force between any two bodies is the product of their mass, divided by the square of their distance multiplied by the gravitational constant.

F = G*(M1*M2)/d^2

G = Gravitational constant

M1, M2 = masses of the two bodies

D = distance between the bodies

As to what "causes" gravity, thats a matter of debate, thought it just give you some information.

EDIT: Basically if you double the distance of the two object, the attraction is four times weaker.

have u ever climbed a building having 26 floors no u use lift to go 26 floor now while returning from 26 floor to ground u will fill weight less its because of zero gravity on earth

Any massive object creates gravity. Earth is a massive object.

if we didnt then when we jumped off the ground or anything like that we would not land back. there would be nothing pulling us toward earth