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Equation
       
    Name Circular Velocity
 
    Equation V = ⁢ g ⁢ r = G ⁢ M r
 
    Definition of terms

v = velocity of orbiting particle, g = acceleration due to gravity, r = radius of orbit, G = gravitational constant, M = mass of orbited body

 
    Comments   For a particle in circular orbit, the inward gravitational force mg provides the centripetal force mv2/r necessary to maintain the circular orbit. By cancelling terms, the equation above is obtained.
 
    References Newtonian Mechanics , A P French, Thomas Nelson & Sons, 1971
       


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