which is the object is unifrom

It's like saying: gravity exists therefore the universe must collapse.

so your saying , g = GM , then

it is the centre of the object

boy xD

It would be insignificant at large distances

So it would be uniform

The centre is still the centre

Perform an experiment. Have a large plane perpendicular to the earth, place an object near it, see where the gravitational force acts on that object.

You're saying it would be towards the centre of the plane.

I'm saying it would be horizontal

Because centre of mass doesn't account for shape of the object

So it's a crude approximation.

There is an experiement you can do to test the centre of mass. You hold a ruler over the edge of the table and find the exact point where it doesnt topple over. Now repeat this on top of the previous ruler over and over again until you have a ruler of the edge of the desk

each time you have found the centre of mass

You're not understanding what I'm saying.

I'm not trying to find where the center of mass is

now suggesting that the ruler is uniform of density then why doesnt the gravity topple the rulers?

Okay okay okay

If I have a very long ruler

I put an object next to it

Do you think the object will be attracted to the ruler or its centre

Aka.

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First of all. The centre of mass definitely is affected by shape just look at the toys that use this effect as a gimmick

Well duh

The centre

But I'm saying

like ive been saying

You don't use centre of mass to calculate gravity when your object is not a point mass.

Which is obvious

what do you mean?

You can only use centre of mass to estimate gravity when the object is like a point mass

> Perform an experiment. Have a large plane perpendicular to the earth, place an object near it, see where the gravitational force acts on that object.
@hgb Is this plane got more mass then the earth. If so the earth will be attracted to the plane. Also this plane woult crumple in on its centre of mass to create a sphere

Near the dead centre of the earth, the prediction of the centre of mass gravity would be very very very large, in reality, it's close to zero.

Ok you're still not getting my point.

The centre of gravity isnt used to calculate the centre of mass ever. It shows where gravity will be in effect

Lmao

Okay.

You're at 5 meters away from centre of the earth

ok

How much gravity force would there be on you