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

Would it be larger than or smaller than g

larger

following inverse gravitational square law

That's what the centre of mass method predicts, right?

no?

i just told you

But in reality, if you're there, obviously, your gravity would be less than g

the inverse gravitational law

thats not true

Okay.

Think about it.

You're at the centre of the earth. Inverse square law predicts near infinite force there, correct?

no

Well say 0.0000001 m away from centre of earth

ok

You would have a humongously large force