Its not necessary that you can use only 'r' as the distance there. Instead of this you can use 'd' also. The other fact may be that the most of the bodies taken in this law are spherical. We may take 'r' as (r') and (r'') the radii of these two spheres and therefore it might be taken the distance between these two bodies as 'r' to avoid confusion while deducting or adding the limit distance in this equation.
The equation is F = GmM/r2 whereF is the force of gravity, G is the universal gravitational constant, m and M are the two masses, and r is the distance between the masses.
Gravity is gravity. It doesn't matter what the mass is made of, just how much mass is present. The Law of Universal Gravitation is F = G m1m2 r-2 where F is force, G is the gravitational constant, m1 and m2 are the masses of the two bodies, and r is the distance between the centers of mass of the two bodies.
The force of gravity depends on the velocity field, the mass and the separation distance, F = vp/r = mv2/r.
Gravity is a field that is emitted from any object with a mass. Like all fields, in theory it will extend to infinity. However, also like all fields, its potency decreases at a rate of (1/r^2), that is if the field width increases by 2, it will be a quarter as effective as it was at the original distance. This is the inverse square law. So, in theory, we should be under the effect of the moons gravity, or even jupiter's! However, the force is so minuscule because of the vast distances, that we cannot feel it! So in answer to your question, yes, gravity does act from a distance. But it acts inversely square to the distance!
Gravity between to bodies falls off with the square of the distance. In other words the gravity falls by a factor of 4 if the distance is doubled or by a factor of 9 if trebled and so on. The formula for gravity = G x m1 x m2 /r2 where G is the gravitational constant, m1 and m2 the masses of the bodies and r the distance between them.
As Newton's law of gravity we know that g=GM/R^2 where G=gravitational constant=6.673*10^-11,M=earth's mass and R=distance of the object from the center of the earth. As earth's mass is constant and G is also constant so g or gravity only depends on the distance of the object.
The equation is F = GmM/r2 whereF is the force of gravity, G is the universal gravitational constant, m and M are the two masses, and r is the distance between the masses.
Actually gravity is not a law; it's a fundamental force of nature. One of four. The other three are electro-magnetic, strong nuclear, and weak nuclear forces. There are gravity laws that describe how gravity works however. The most popular one is Newton's Law of Gravity that states the force of gravity is proportional to the product of the target and source mass, and inversely proportional to the square of the distance between the two masses. It is a scientific law because it was based on scientific data and observation by Isaac newton. And it results have been repeatedly validated by scientific experiment. We can write the law as F = kMm/r^2; where k is the proportionality constant, m and M are the two masses, and r is the distance between them.
Actually gravity is not a law; it's a fundamental force of nature. One of four. The other three are electro-magnetic, strong nuclear, and weak nuclear forces. There are gravity laws that describe how gravity works however. The most popular one is Newton's Law of Gravity that states the force of gravity is proportional to the product of the target and source mass, and inversely proportional to the square of the distance between the two masses. It is a scientific law because it was based on scientific data and observation by Isaac newton. And it results have been repeatedly validated by scientific experiment. We can write the law as F = kMm/r^2; where k is the proportionality constant, m and M are the two masses, and r is the distance between them.
Gravity is gravity. It doesn't matter what the mass is made of, just how much mass is present. The Law of Universal Gravitation is F = G m1m2 r-2 where F is force, G is the gravitational constant, m1 and m2 are the masses of the two bodies, and r is the distance between the centers of mass of the two bodies.
You are at earths surface (call this 1 radius (1r) from earth center) with acceleration due to gravity at say 10 (m/s)/s, if you double your distance (in terms of radius this = 2r) and install in equation: a= 10/(2(r)^2) inverse square law a= 10/4 a= 2.5 (m/s)/s 2* distance = 1/4 the gravity 3* distance = 1/9 the gravity 4* distance = 1/16 the gravity
Where f = the gravitational force, G = the gravitational constant, m1 = the mass of the first body, m2 = the mass of the second body and d = the distance (note: sometimes r is used for radius) between the centres of gravity of the two bodies:f = (Gm1m2) / d2
The force of gravity depends on the velocity field, the mass and the separation distance, F = vp/r = mv2/r.
By the letter R.
Law of Gravity: Fg = G(m1*m2)/r^2
The set of irrational numbers is NOT denoted by Q.Q denotes the set of rational numbers. The set of irrational numbers is not denoted by any particular letter but by R - Q where R is the set of real numbers.
gravity force=G*m1*m2/r^2. this well known formula can be used to measure the gravity force in a particular distance from the object with mass m1.