Engineering Mechanics
The frequency of oscillation of a compound pendulum is (where kG = Radius of gyration about the centroidal axis, and h = Distance between the point of suspension and C.G. of the body.)

1/2π. √(kG² + h²/gh)
1/2π. √(gh/kG² + h²)
2π. √(kG² + h²/gh)
2π. √(gh/kG² + h²)

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