How does the g formula work?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The g formula g = G × M / r² calculates gravitational acceleration, where G is the gravitational constant, M is the planet's mass, and r is the distance from the planet's center. On Earth's surface, this yields approximately 9.8 m/s². This formula explains why gravity is weaker on the Moon (1.62 m/s²) due to its smaller mass, and why gravity decreases with altitude as distance from Earth's center increases.
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