Answer :
The radius of gyration of a wheel with a mass of 50 kg about its center of mass G is 122 mm.
The radius of gyration of a body is the distance between the axis of rotation and a point where the total mass of the body could be concentrated to create the same moment of inertia as the given body has. The moment of inertia of a body depends on its mass distribution, and the radius of gyration is a measure of how that mass is distributed relative to the axis of rotation.The radius of gyration of a wheel with a mass of 50 kg about its center of mass G is given as 122 mm. The radius of gyration indicates the distribution of the mass of the wheel relative to its axis of rotation. The higher the radius of gyration, the more mass is distributed away from the axis of rotation. Thus, a larger radius of gyration would mean the wheel is more difficult to turn around its axis.
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