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Forums
Physics
Classical Physics
Mechanics
An isolated object can rotate only about its center of mass
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[QUOTE="jbriggs444, post: 6320368, member: 422467"] OK. So we have adopted a frame of reference where the center of rotation (if any) is stationary and remains so. If the center of mass is not at the center of rotation, that means that the center of mass is circling the center of rotation, right? Which means that the center of mass is accelerating, right? And what do we know about the acceleration of the center of mass in the absence of external forces? Edit: Since you have chosen this particular notion of rotation about a point, I will refrain from trying to introduce the notion of an instantaneous center of rotation for an object whose center of mass is moving. [/QUOTE]
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Physics
Classical Physics
Mechanics
An isolated object can rotate only about its center of mass
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