Question id 222 - Flight Performance and Planning - SPL - Sailplane Pilot License

Distance of a mass from the center of gravity
Point on the longitudinal axis of an aeroplane or its extension from which the centers of gravity of all masses are referenced
Distance from the datum to the center of gravity of a mass
Point through which the force of gravity is said to act on a mass

Training tests and timed exam simulations SPL - Sailplane Pilot License