do all objects in the universe exert gravitational force?

Question

theeric · Answer

All object with mass do!

Here's the formula:$$F_{gravitational}=G\frac{m_1\ m_2}{r^2}$$Where $r$ is the distance between objects, the $m_1$ and $m_2$ are the masses, and $G$ is a constant, called the gravitational constant.

What mass is still a mystery, as far as I know. But all of the particles I know about have it. Mass as I know it is a quantity that causes relations like $F=ma$ and $KE=\frac{1}{2}m\ v^2$.

isaiah.feynman · Answer

Good explanation @theEric. Do you know know of the LHC @theEric

theeric · Answer

Thanks! And not too much! I heard something about them maybe finding a boson particle, but I'm not sure. And I'm not up to date with the particle physics. Why do you ask? Do you know? :)

isaiah.feynman · Answer

Part of that experiment is to determine the origins of mass itself.

theeric · Answer

I hope they find out! It'll be interesting. That's cool! Thanks.

isaiah.feynman · Answer

No probs.

ivancsc1996 · Answer

And after relativity, I think actually everything with energy excerts a gravitational force.

isaiah.feynman · Answer

@ivancsc1996 thats right since mass is concentrated energy