1. what is gravitational constant?

  • 0
gravitational constant =

6.67384 × 10-11m3kg-1s-2

  • 1

  1. the constant in Newton's law of gravitation relating gravity to the masses and separation of particles, equal to 6.67 × 1011N m2kg2.
  • 1

The gravitational constant, symbolizedG, is a physical constant that appears in the equation for Newton's law of gravitation. Sir Isaac Newton (1642-1727), the English mathematician, quantified the behavior of the force ofgravity. He noticed that the gravitational force between two objects is proportional to the product of theirmasses, and inversely proportional to the square of the distance between their centers.

According toNewton's law, given any two objects having massm1andm2(inkilograms) whose centers of mass are separated by a distancer(inmeters), there exists an attractive gravitational forceF(innewtons) between the objects, such that:

F=Gm1m2/r2

The value ofGin this equation is approximately equal to 6.67 x 10-11newton meters squared per kilogram squared (N x m2x kg-2). This constant is uniform throughout the Solar System, and apparently throughout our galaxy and other galaxies in its vicinity.

Some astronomers believe that if the universe is expanding as the popular Big Bang theory suggests, the value ofGis gradually decreasing.

  • 1
What are you looking for?