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If you're talking about the Universal Gravitation than it is 6.67 x 10^-11
Wiki User
∙ 15y ago
Wiki User
∙ 14y agohttp://en.wikipedia.org/wiki/Gravitational_constant
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How was the gravitational constant G first determined?
The gravitational constant appears in Newton's law of universal gravitation, but it was not measured until 1798-71 years after Newton's death-by Henry Cavendish (Philosophical Transactions 1798). Cavendish measured G implicitly, using a torsion balance invented by the geologist Rev. John Michell. He used a horizontal torsion beam with lead balls whose inertia (in relation to the torsion constant) he could tell by timing the beam's oscillation. Their faint attraction to other balls placed alongside the beam was detectable by the deflection it caused. Cavendish's aim was not actually to measure the gravitational constant, but rather to measure the Earth's density relative to water, through the precise knowledge of the gravitational interaction. In retrospect, the density that Cavendish calculated implies a value for G of 6.754 × 10−11 m3/kg/s2.The accuracy of the measured value of G has increased only modestly since the original Cavendish experiment. G is quite difficult to measure, as gravity is much weaker than other fundamental forces, and an experimental apparatus cannot be separated from the gravitational influence of other bodies. Furthermore, gravity has no established relation to other fundamental forces, so it does not appear possible to calculate it indirectly from other constants that can be measured more accurately, as is done in some other areas of physics. Published values of G have varied rather broadly, and some recent measurements of high precision are, in fact, mutually exclusive.In the January 5, 2007 issue of Science (page 74), the report "Atom Interferometer Measurement of the Newtonian Constant of Gravity" (J. B. Fixler, G. T. Foster, J. M. McGuirk, and M. A. Kasevich) describes a new measurement of the gravitational constant. According to the abstract: "Here, we report a value of G = 6.693 × 10−11 cubic meters per kilogram second squared, with a standard error of the mean of ±0.027 × 10−11 and a systematic error of ±0.021 × 10−11 cubic meters per kilogram second squared."
How can the value of the acceleration due to gravity can be calculated for any planet?
The basic equtiion is g=(GM)/(r squared). Where G is the gravitational constant, M is the mass of the object, and r is the radius of the object. There are a lot of other factors to include to get a more accurate number, but this equation will get you in the same ballpark.
What was Cavendishs contribution to Newtons Law of Gravitation?
Cavendish's famous experiment led to a measured value for G, the universal constant of gravity.
Why gravatational force has constant value?
because mass has no relativity with attraction so that gravitation force is constant
Why is it necessary to use the universal gravitation constant in the universal law of gravitation?
To rationalize the units on both sides of the equation, E= -GmM/r, e.g if feet is used as the unit of distance r then the Constant G would have a different value.
Value of gravitational constant on earth and moon?
It's the same as that of Earth but the value of g varies from one object to the other. The value of the gravitational constant or the BIG "G" remains constant. I think you confused it with the LITTLE "g" which is the gravitation of a object (one with mass) or the acceleration due to gravity. The value of g on Earth and Moon is 9.8m/s^2 and 1.6249m/s^2, respectively. I hope this answers you all.
What is the gravitation force of Saturn?
That acceleration of gravity at the surface of Saturn is 9.0 m/sec2, or about 91.8% ofits value at the earth's surface.An object that weighs 100 pounds (or 100 newtons) on earth would weigh 91.8 pounds(or 91.8 newtons) on Saturn.
How do I calculate the mass of the Earth?
Use the universal law of gravitation, insert the known value for the gravitational constant, and use the fact that each kilogram is attracted by a force of 9.8 Newton.
What is the value of gravitation?
g = 9.8m/s²
What was the value of gravity in newtons 1 billion years ago?
Gravity is not measured in Newtons. The Gravitational Constant, as its name implies, was the same a billion years ago as it is today, which is: 6.67 × 10-11 m3 kg-1 s-2
What is the value of 'G' on earth and on moon?
The average equatorial surface gravity on Earth is 0.99732 g On the moon it is 0.1654 g The numerical constant G that is used in Newton's Law of Universal Gravitation is a constant no matter where you are. (6.67 X 10-11).
What the law of universal gravitation?
the universal law of gravitation states that the forces of gravity acts between all objects in the universe. -Jerrold Robinson- Universal law of gravitation states that , in each and every object in this universe there is the force of attraction between them which is called gravitation force that is always directly propotion to the masses and indirectly proportion to the squre of the distance between them. i,e. G whose value is constant i,e.6.67*10^-11.
What is the law of gravitational gravitation?
the universal law of gravitation states that the forces of gravity acts between all objects in the universe. -Jerrold Robinson- Universal law of gravitation states that , in each and every object in this universe there is the force of attraction between them which is called gravitation force that is always directly propotion to the masses and indirectly proportion to the squre of the distance between them. i,e. G whose value is constant i,e.6.67*10^-11.
What is a non zero constant?
That means the constant has a value that is different to zero.That means the constant has a value that is different to zero.That means the constant has a value that is different to zero.That means the constant has a value that is different to zero.
