Universal Gravitational Constant G: History of Physics for JSTSE Class 9
Newton (1643-1727), Cavendish (1731-1810)
Newton published the law of gravitation in 1687. It may be stated as:
Gravitational force is proportional to the the product of the masses of the two bodies and inversely proportional to the square of the distance between them. In mathematical form,
F = G m1 m2 / R2
The gravitational constant G was determined in 1797-98 by Cavendish with the help of a torsion balance.
Newton (1643-1727), Cavendish (1731-1810)
Newton published the law of gravitation in 1687. It may be stated as:
Gravitational force is proportional to the the product of the masses of the two bodies and inversely proportional to the square of the distance between them. In mathematical form,
F = G m1 m2 / R2
The gravitational constant G was determined in 1797-98 by Cavendish with the help of a torsion balance.
G = 6.67 X 10-11 N m2 kg-2
- G is a fundamental physical constant.
- The numerical value of G depends on the system of units used
- G is a universal constant because it has the same value for any two bodies everywhere
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