what has a stonger pull of gravity? surface of the earth or the surface of the sun?
599254
The Sun, its pull is making the planets in this system orbit.
156537
The force of gravitational attraction that the earth exerts on the moon tending to pull the moon towards its center, is exactly balanced by the centrifugal force (that tends to take the moon away from the earth) on the moon due to its (approximately) uniform circular motion.\n\nMathematically,\n\nFg   =     Fc
677265
The Earth and our body exert forces on each other according to Newton's law of gravity.  Essentially mass attracts other mass.
953138
Gravity, because the sphere is the most economical shape in the universe.  It holds the most mass in the smallest area.  It is why planets have their shape as well, I was not aware that Nuclear fusion had any effect on the shape of the sun...\n\nmay you forever learn and forever ask
112179
Gravity is a force of attraction that acts between bodies that have mass. It is a physical phenomenon of fundamental importance, profoundly affecting the workings of the world around us and the universe beyond. Most familiarly, it is the gravitational attraction of the earth that endows objects with weight and causes them to fall to the ground when dropped. In fact, gravity is also the reason for the very existence of the earth, the sun and other celestial bodies; without it matter would not have coalesced into these bodies and life as we know it would not exist. Gravity is also responsible for keeping the earth and the other planets in their orbits around the sun, the moon in its orbit around the earth, for the tides, and for various other natural phenomena that we observe.\n\nIn common usage "gravity" and "gravitation" are either used interchangeably, or the distinction is sometimes made that "gravity" is specifically the attractive force of the earth, while "gravitation" is the general property of mutual attraction between bodies of matter. In technical usage, "gravitation" is the tendency of bodies to accelerate towards one another, and "gravity" is the force that some theories use to explain this acceleration.\n\nGravity was rather poorly understood until Isaac Newton formulated his law of gravitation in the 17th century. Newton's theory is still widely used for many practical purposes, though for more advanced work it has been supplanted by Einstein's general relativity. While a great deal is now known about the properties of gravity, the ultimate cause of the gravitational force remains an open question and gravity remains an important topic of scientific research.\n\nContents [hide]\n1 Overview of the history of gravitational theory \n2 The Earth's gravity \n2.1 Comparative gravities of the Earth, Sun, Moon and planets \n3 Mathematical equations for a falling body \n3.1 Gravitational potential \n3.2 Acceleration relative to the rotating Earth \n4 Gravity and astronomy \n4.1 Self-gravitating system \n5 Practical uses of gravity \n6 Newton's law of universal gravitation \n6.1 Acceleration due to gravity \n6.2 Bodies with spatial extent \n6.3 Vector form \n6.4 Gravitational field \n7 Problems with Newton's theory \n7.1 Theoretical concerns \n7.2 Disagreement with observation \n7.3 Newton's reservations \n8 Einstein's theory of gravitation \n8.1 Experimental tests \n9 Comparison with electromagnetic force \n10 Gravity and quantum mechanics \n11 Alternative theories \n11.1 Recent alternative theories \n11.2 Historical alternative theories \n12 Notes \n13 See also \n14 References \n15 External links \n \n\n\n[edit]\nOverview of the history of gravitational theory\nThe first mathematical formulation of gravity was Isaac Newton's law of universal gravitation, published in his 1687 work Principia Mathematica. Professor William Whewell of Cambridge University, author of History of the Inductive Sciences (1837) stated:\n\n"The law of gravitation is indisputably and incomparably the greatest scientific discovery ever made, whether we look at the advance which it involved, the extent of the truth disclosed, or the fundamental and satisfactory nature of this truth." [In A Treasury of Science ed. Harlow Shapley et al, Harper & Bros. NY: 1946] \nAlthough the law of universal gravitation was first clearly and rigorously formulated by Isaac Newton, the phenomenon was observed and recorded by others. Even Ptolemy (c. 100-178) had a vague conception of a force tending toward the center of the Earth which not only kept bodies upon its surface, but in some way upheld the order of the universe. Indian astronomer Brahmagupta (598-668), who followed a heliocentric solar system, was the first to recognize gravity as a force of attraction. He explained that "bodies fall towards the Earth as it is in the nature of the Earth to attract bodies
620070
On earth 9.8N = 1kg, but that is just because the earth's acceleration due to gravity is 9.8m/s².\n\nTo find the gravitational pull of the sun (like 9.8 for the earth) just use the formula g = GM/r², where G is the gravitational constant (6.67x10^-11), M the mass of the sun (1.9891x10^30 kg), r the radius of the sun (6.95x10^8m).
169921
shosh is correct. Cause they are! The pull of gravity comes from the earth. Don't get hung up on UP and DOWN. There is no UP or DOWN... What is UP? Why would you assume that you are UP and I am DOWN? Or vise versa? There is no UP or DOWN. We have just chosen north as up as a convenience. You could hold a map in any direction or a globe at any angle it doesn't matter. We just have tried to standardize our thinking. We are working with a 1000 year old model that doesn't take into account what we know today.
128964
No it is not equal. As we move upwards that is in altitude the gravitational pull decreases.If we go in more depth the the pull decreses. Moving towards the equator also decreases this pull of gravity. It is least at the poles. But for convenience we take the average of all these which comes out to be 9.8.This is also called the acceleration due to gravity.
842967
Gravity is a condition of the space-time continuum which is associated with mass.  Every object which has a mass will have a gravitational attraction to any other close object with a mass.\n\nThe planet Earth has a mass, and therefore has a "gravity."
921188
What is the question?  Earth's gravity is a huge subject, best answered with some existing web sites.  I would read the sources below first.
60690
The amount of matter in an object is called its mass. The force of gravity is dependent on the amount of mass a body has. That means that the gravity on the Earth is greater than the gravity on the Moon, since the Earth has much more matter or mass than the Moon.
644891
No, because gravity is inflicted by the mass of an object... and we have a very massive object near by that will outweigh any gravity caused by a humble golf ball or a slightly proud bowling ball: it's called the Earth.\n\nBasically, gravity is a force of attraction, so a large object will attract a small object. That is what keeps the moon orbiting the Earth, and the planets orbiting the Sun. Even here on Earth objects are attracted to each other, but the Earth's gravity makes that force almost impossible to measure or detect.
406724
I think you are interested in the earth's mass.  If you wanted to earth's weight ( with respect to the sun) you would need the earth's mass and the sun's gravitation pull.\n\nIt doesn't really make sense to find the earth's weight relative to the earth's gravitation pull.
4566
The Earth as a whole can be considered a single mass, m1 and another object, for example you, or the moon, or an apple, is considered another mass, m2. The gravity force between them is given as:\n\nF = G*[(m1*m2)/r^2]\n\nWhere G is the Gravitational constant and is equal to:\n6.67x10^-11 N m^2/kg^2\n\nSo the root cause of the Earth's gravity is it's mass and how it pulls on other masses as given by the equation above. \n\nYou can see that with two very massive objects like the Earth and the Sun you get a much bigger force than with smaller masses like 2 people. THat's why the Earth is kept in orbit about the Sun but you don't feel a force pulling you towards other people for example.
780074
Gravity and the spinning of the earth on it's axis... which gives you the one shape out of all possible shapes which allows for the greatest amount of surface area... the sphere.
1175736
the gravitational force can act in any medium as well as in vacuum. the sun exerts a gravitational force on the earth across a vast expanse of vacuum! this itself is proof enough.\nthe objects will all touch the ground at the same time whether in a medium or in vacuum. this occurs for the sole reason tht all of them are of equal mass.
42438
The Sun weighs approximately 2*10^30 kg, which is about 333000 times the weight of the Earth.