# Thread: Making something weigh nothing no matter what is in it?

1. Would it be possible to do this?

2.

3. No. If it has mass, then there is nothing you can do about it.

4. Depends on what he means. Mass and weight are two different things. Something has mass as long as it is made of matter. Weight is the force of attraction by two masses. Example: baseball and earth. They attact each other.

5. Oops, didnt notice that he said weight.

6. The answer is still no. If what is in it is massless, then it will weigh nothing. If what is in it is not massless, then it will have weight. However, as mass cannot be eliminated from massful objects or introduced into massless objects, then "making" it weigh nothing is not possible.

7. I disagree. I think there could be a type of mass that weighs nothing, maybe even less than nothing. Physics and Maths are similar in a way, and I believe just like you can go to the negative stages in numbers, you can go to the negative stages in mass.

8. How is it possible to weigh less than nothing ?? That is almost like saying there is the speed of light, and the reverse speed of light.

Besides, what about antimatter ? I though that would destroy any matter

9. Nothing is energyless(zero energy= doesn't exist ). GR says anything with energy is effected by gravity. Therefor something that is weightless(isn't effected by gravity) doesn't exist.

10. Originally Posted by WinterMutant2000
I disagree. I think there could be a type of mass that weighs nothing, maybe even less than nothing. Physics and Maths are similar in a way, and I believe just like you can go to the negative stages in numbers, you can go to the negative stages in mass.
Thats like saying gravity can go into minus figures ie it will repel.....A totally speculative notion that has no evidence in reality.

11. Well if there WAS something that the earth repelled, we probably wouldn't find it on earth. :P

12. Dark Energy!

Speculation...

13. Edit: Never mind, I mistook the point made.

14. Originally Posted by Imaplanck.
Nothing is energyless(zero energy= doesn't exist ). GR says anything with energy is effected by gravity. Therefor something that is weightless(isn't effected by gravity) doesn't exist.
Really, i would say if you go small enough you will always find zero energy somewhere?? or would the smallest particles/energy of all be all bound together with no space between?

 Bookmarks
##### Bookmarks
 Posting Permissions
 You may not post new threads You may not post replies You may not post attachments You may not edit your posts   BB code is On Smilies are On [IMG] code is On [VIDEO] code is On HTML code is Off Trackbacks are Off Pingbacks are Off Refbacks are On Terms of Use Agreement