![]() Hence, the determination of the constant of gravitation does not seem as essential as the measurement of quantities like the electronic charge or Planck’s constant. Second, according to general relativity and the principle of equivalence, G does not depend on material properties but is in a sense a geometric factor. Thus, the combination GM, not the separate value of M, is the only meaningful property of a star, planet, or galaxy. In the first place, the mass M of any celestial object cannot be determined independently of the gravitational attraction that it exerts. It must be pointed out that G occupies a rather anomalous position among the other constants of physics. In Newton’s law of universal gravitation, the attractive force between two objects ( F) is equal to G times the product of their masses ( m 1 m 2) divided by the square of the distance between them ( r 2) that is, F = G m 1 m 2/ r 2. Gravitational constant ( G), physical constant denoted by G and used in calculating the gravitational attraction between two objects. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today. See all videos for this article Newton’s law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives. ![]() Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.
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