What is radius of gyration?
please tell me in simple words.......i find hard to understand
please tell me in simple words.......i find hard to understand
1 Answer
Jan 6, 2018
see below
Explanation:
consider the two diagrams above
In diagram 1 we have a shape rotating about an axis. If the mass is
then its moment of inertia is
in diagram 2 we have the same axis of rotation but this time the same mass is concentrated at a point.
its moment of inertia is
if the two values of the moments of inertia are the same
then
in other words the radius of gyration is the distance from the axis of rotation at which the total mass of a body is assumed concentrated and at which the moment of inertia will be equal to the actual moment of inertia of the body.
so