You measure the gravitational force between two objects - this can be done with a Cavendish balance. Then you plug in the numbers (masses, and force) into the universal formula for gravitation.
Henry Cavendish
G = 6.6738480x10-11 m3kg-1s-2
Henry Cavendish with about 1.19% error. He measured it to be 6.754 × 10−11N-m2/kg2.
what is dimnsion of gravitational constant
England.
The gravitational constant denoted by letter G, is an empirical physical constant involved in the calculation(s) of gravitational force between two bodies
Cavendish used a torsion balance apparatus, known as the Cavendish experiment, to determine the value for Newton's universal gravitational constant. The apparatus consists of a light rod suspended from a thin wire, with two small lead spheres mounted on either end of the rod. By measuring the twisting of the wire due to the gravitational force between the spheres, Cavendish was able to calculate the value of the gravitational constant.
You measure the gravitational force between two objects - this can be done with a Cavendish balance. Then you plug in the numbers (masses, and force) into the universal formula for gravitation.
Henry Cavendish's contribution to Newton's Law of Gravitation was his experiment to determine the gravitational constant, which allowed for the precise calculation of the gravitational force between two objects. This value was crucial for the accurate prediction of the behavior of celestial bodies based on Newton's law of gravitation.
Henry Cavendish
You use the universal formula for gravitation. Lab measurements - such as the Cavendish balance - are used to determine the constant, G. Once this is known, you can measure the force of gravity between a known mass, and Earth, and insert the values in the formula for gravitation.
Cavendish
Yes, the universal gravitational constant is believed to be the same across the whole of the universe.
B. A. Soldano has written: 'Newton's law of universal gravitation and the fine structure constant' -- subject(s): Fine-structure constant, Gravitation
G = 6.6738480x10-11 m3kg-1s-2
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.