Why do masses attract? What is the force of gravity?

Yes,, the universe is built on the forces of gravity, but we don't understand what makes gravity work. We do understand how gravity works (proportional to the product of the masses, and inversely proportional to the square of the distance between them) and causes acceleration of any mass. Why? We don't know, but it is an innate property of matter, perhaps due to Higgs Bosons or something else. The scale is universal in scope, and gravity is much weaker than the electromagnetic, molecular, and nuclear forces.

By the way, if you answer the first question, be sure you collect your Nobel prize for physics.

A mystery of the universe...

It is not know how gravity works.

But we observe that gravity is a force that attracts masses together,

and

it is proportional to the masses involved

and

inversely proportional to the square of the distance between the masses.

I'm certain that a Nobel prize awaits the person who determines how gravity works.

Meanwhile, the hunt for the supposed 'graviton' goes on. But that may be a red herring. In truth we have no idea how gravity works.

And the issue is currently clouded by the alleged repulsion of dark energy.

Mass is a property of matter that causes spacetime to warp in a higher dimension.

It's easier to understand why things "attract" other things if you look at space as a sort of lumpy sheet, with objects rolling up and downhill as a result of gravity. Gravity causes space to "sink" in a hyperspatial dimension, and so when an object is "attracted" by gravity, what's really happening is that it's rolling downhill towards the bottom point of a gravity well.

At this time I will not say what the universe is built on

But

I'm pretty sure it's not gravity

Gravity to me is more like static electricity,

How else could anything (you & me) stick to something (earth) spinning at 24,000 mph

Don't underestimate static electricity, a non conductive balloon rubbed on your hair then sticking to a wall. Or pass it by your hair again and watch it attract your hair.

What makes little objects attract also affects masses

Motion creates magnetism , even the non spinning moon has gravity from either it's relation to the earth or what ever it's history was.

Moon has gravity

Earth has gravity

Sun has gravity

Amazing they keep their distance

Yep

gravity is static electricity

*Why* gravity is the way it is - - is still essentially a mystery.

Perhaps gravitons exist (that's a hypothesis that still gets pretty wide consideration)

Perhaps gravity is just and only how mass warps space-time (Essentially the leading contender at this point...)

Perhaps another reason entirely will develop - particularly with investigations into 'dark matter'.

Matter is made of the intricate loops and twist that pulls on all sides of the fabric of spacetime, creating spacetime warp that causes them to fall into each other: fall/attraction we can quantify or measure as resistance to acceleration and describe as gravitational mass/magnitude of the gravitational force.

because matter is formed of atoms ,and atoms contain protons,electrons and nucleus.it also has valence electrons that help in bonding with other atoms thus this force of attraction present between two atoms(the force maybe coulombic,covalent,ionic etc)bonds two atoms .on a large scale two crystals which are again composed of atoms tend to attract other crystals on behalf of the forces acting and present at atomic and molecular level.

the strength of attraction is again directly proportional to the magnitude of force acting between them,which is dependent on the number of electrons involved in their bonding and mass of participating atoms.finally this attractive(gravitational force) is inversely proportional to the distance separating them.

i would also say that their maybe other reasons that contribute towards the cause.

uniontera number 2 about gravity

hope it helps

/Uniontera Ja

what goes up must come down