2006-08-14 08:57:16 · 11 answers · asked by bernard.e 1 in Science & Mathematics ➔ Physics
Gravity is a force of attraction only between bodies that have mass. The word 'gravity' comes from the Latin word "gravitas", meaning 'weight'. The force of gravity that one body exerts on another can be expressed as:
G * m1 * m2
Fgravity = ____________ (1)
r2
F = Force of gravity experienced by bodies.
m1 = mass of body.
G = Gravitational constant , 6.6726 * 10-11 m3 kg-1 s-2. m2 = mass of second body.
r = radius of body.
2006-08-14 09:03:58 · answer #1 · answered by Bob 4 · 0⤊ 0⤋
Gravity is a result of a massive body curving spacetime as described by Einstein's General Theory of Relativity. If you have two massive bodies, the force of gravity between those two bodies is given by Newton's equation, but this is only a first order approximation. Photons do not have mass, but due to the curvature of spacetime, photons would be deflected by gravity as well. This has been experimentally confirmed, and is NOT a prediction of Newton's Law of Gravity (i.e., Newton was wrong...well, only approximately right).
Mathematically, if you google "Einstein equation" you should find a complicated equation to describe gravity.
2006-08-14 09:34:49 · answer #2 · answered by Davon 2 · 0⤊ 0⤋
Gravity is the force which is produced by some particles, called graviton. those gravitons carry the energy that cause the gravitational force.
actually all that masses, protect this gravitons.
Gravitons don't have mass. so they can go so far and effect on far away masses.
according to relativity theory, gravity can make the time/space round, around the centre of gravity. and it time is pasting slower close to the strong gravity.
I hope that helps.
you can alse take look at Stephen Howking's books.
2006-08-14 10:08:27 · answer #3 · answered by Yara 2 · 0⤊ 0⤋
Gravity is in the form m/s^2. Hence, it has the exact same unit suffix as 'acceleration'.
Force of gravity is another way of saying 'force of acceleration'. Hence, gravity is not a Force itself, but a component of Force.
F = m*a
a = acceleration, or gravity.
2006-08-14 09:31:04 · answer #4 · answered by Krzysztof_98 2 · 0⤊ 0⤋
I don't understand what do you say. Gravity Gravity is a measurement of the force.It is the tendency of objects with mass to accelerate toward each other. Gravitation is one of the four fundamental interactions in nature,
2006-08-18 04:17:37 · answer #5 · answered by Hades et Persephone 7 · 0⤊ 0⤋
Gravity isn't a form, its a measurement of a universal constant.
2006-08-14 09:03:47 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Gravity has no FORM.
Gravity has no PARTICLES although you can try to visualise Gravity using VIRTUAL particles called GRAVITONS,
Gravity has no MASS so it travels at the speed of LIGHT.
2006-08-16 04:04:33 · answer #7 · answered by Henry 5 · 0⤊ 0⤋
gravitational force is a kind of non-contact force which is not in contact with its body of application.it has its own region of space where it is felt(field).it has to do with the attraction of particles.gravitational forces are exerted on every particle in the universe including man.that is why we have weight.weight is the earth's gravitational pull on a particle.the earth here is acting as a particle and exerting a force of attraction on another particle.
2006-08-14 10:11:16 · answer #8 · answered by teee 2 · 0⤊ 0⤋
a great fall , ask humpty dumpty
2006-08-14 09:04:34 · answer #9 · answered by Anonymous · 0⤊ 0⤋
its a vector field
2006-08-14 09:02:15 · answer #10 · answered by gjmb1960 7 · 0⤊ 0⤋