What is √(GM/r)?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The expression √(GM/r) represents orbital velocity, the speed reuired for an object to maintain a circular orbit around a massive body. G is the gravitational constant, M is the mass of the central body (like Earth), and r is the orbital radius from the center. This formula shows that orbital velocity decreases with distance—satellites farther from Earth move slower.
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