Question

why G called universal constant?

Answer 1

G is called The universal gravitational constant because at any point of the universe the value of G is constant. 

Answer 2

The gravitational constant (also known as ''universal gravitational constant '',o r as''Newton's constant ''),denoted by letter G, is an empirical physical constant involve in the calculation of gravitational effect in sir Isaac Newton's law of universal gravitational and in Albert Einstein's generally theroy of.