Why g is called the universal gravitational constant.
Answer:
Because it's the constant in Newton's Law of Universal Gravitation.
It's "gravitational" because it is related to gravity; "universal ... constant" because it is the same in all cases.
"Universal" because it applied to the whole of the Universe.
Another answer. But, g isn't called the universal gravitational constant.
g is the acceleration due to gravity on our planet only.= 9.81 m s-2
The universal gravitational constant is G (often called big G ) = 6.673 x 1011 m3 kg-1 s-2.
It appears in Newton's equation f= Gm1m2 / d2 .
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Cavendish measured the gravitational constant "G".
The gravitational constant denoted by letter G, is an empirical physical constant involved in the calculation(s) of gravitational force between two bodies
g, the force of the Earth's gravitational attraction, is not a constant.
It is m3kg-1s-2
The gravitational constant, G (big G), is a physical constant that doesn't change at all. The magnitude of gravitational acceleration, g (little g), has no effect on G.Little g is used as an approximation for near-surface gravity of a planet (or other large mass). The reason it is used is because the formula for universal gravity and Newton's second law:F = G (mplanet*mobject)/(r3) -- r is the distance between the centers of massF = mobject*aobjectyields (when set equal and dividing out the mass of the object): aobject = G (mplanet)/r3As you can see, the acceleration due to gravity won't change much for distances near the planet's surface. We call the above magnitude, g. Each planet has its own g and Earth's is about 9.8 m/s2.