What is radius of gyration?

The radius of gyration is a measure of an object's distribution of mass around an axis. It is defined as the distance from the axis at which the object could be concentrated without changing the moment of inertia. In other words, it is a measure of how far an object's mass is distributed from its center of rotation.

The radius of gyration is often used in engineering and physics to describe the rotational motion of an object. It is commonly denoted by the symbol "k" and is calculated using the formula:

k = √(I / m)

where: k = radius of gyration I = moment of inertia of the object m = mass of the object

The radius of gyration is important in the design of structures and machinery as it helps determine how objects will rotate and how much force is required to move them. It is also used in sports science to evaluate the performance of athletes and equipment.