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# does the earth have weight? watch

1. i know the earth has mass - 5.9721986 x 10^24kg - but does it have weight? in relation to what? supposedly everthing in the universe has weight - because of gravity, but the earth`s weight is confusing me
2. Hmm...

Can something have weight relative to its own gravitational force? I'm confused...

Why do you need to know this?
3. ever got something in your head that really buggs you?

this is just one of those!

like you say - if it has weight, what the hell`s it relative to?

technically speaking it`s not possible, but, if i dropped the thing on my foot i`d know about it!
4. Doesn't the gravity of the Sun give it weight?
5. That's a tricky one.

I'd say the earth does have weight, but perhaps it's weight is relative to the Sun's gravity? That's my guess but what would I know, I only did physics till GCSE...
6. Yes it has weight as its in the suns gravitational field, weight is just a vector quantity F=MG = (5.9721986 x 10^24)(g) and the force acts towards the centre of the sun.
7. (Original post by USB)
Doesn't the gravity of the Sun give it weight?
Yes, and the moon too but it makes more sense just to talk about the mass of the Earth as we don't need to consider other objects before we can discuss it!
8. Its like asking whether a lump of rock orbiting earth has weight! Just instead of the earth its the sun and instead of the lump of rock its the earth.
9. (Original post by Mr M)
Yes, and the moon too but it makes more sense just to talk about the mass of the Earth as we don't need to consider other objects before we can discuss it!
Hmm, in that case, one could argue that each individiual particle would give its adjacent ( technically all) particles some weight...

That would mean (if the earth was the same density throughout), that the surface of the earth has a greater weight that the core... ?
10. (Original post by USB)
Hmm, in that case, one could argue that each individiual particle would give its adjacent ( technically all) particles some weight...

That would mean (if the earth was the same density throughout), that the surface of the earth has a greater weight that the core... ?
The earth has a greater gravitational field strength on the surface than at the core so you would weigh more on the surface than at the core!

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