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What effect of gravitational acceleration on Gravitational constant G?
Wiki User
∙ 14y ago
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 mass
- F = mobject*aobject
- aobject = G (mplanet)/r3
We call the above magnitude, g. Each planet has its own g and Earth's is about 9.8 m/s2.
Wiki User
∙ 14y ago
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