Conceptual Dynamics - Independent Learning

General Planar Motion with a Center of Mass Reference - Example 6.7-2

 

The angular motion of a body undergoing general planar motion (i.e. translating and rotating) is described by the following equation, where P is an arbitrary reference point.

 

MP = IPα + rG/P x maP

 

Explain why, if G is the reference point, the body's angular motion is described by the following equation.

 

MG = IGα