XU Binfu
Abstract
The center of mass for an arbitrary and even triangular frame is determined by using pure geometrical method;based upon it,the rotation inertia formula of a rigid triangular frame about its center-of-mass axis is derived;and thus lay a theoretical foundation for the calculation of rotation inertia about a grid-like rigid body.
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The center of mass for an arbitrary and even triangular frame is determined by using pure geometrical method;based upon it,the rotation inertia formula of a rigid triangular frame about its center-of-mass axis is derived;and thus lay a theoretical foundation for the calculation of rotation inertia about a grid-like rigid body.
Key concepts: Physics, Rotation (mathematics), Inertia, Center of mass (relativistic), Moment of inertia, Rigid body, Euler's equations, Frame (networking)