where A Alpha is a rotation about an unknown point(adsbygoogle = window.adsbygoogle || []).push({});

r is a vector form centre of a point O to the centre of mass

Mo = IgA + rxma

Does this mean in plane motion the moment about some points is different? I always thought the moment is a free vector.

So can you apply Mo any where and get the some rotation A?

Mo = IoA which is true when o is fixed

Mo = IoA = IgA + rxma is this correct?

Also In my text there is a formula

Mo = IoA + rxma_{o}

i don't really understand the last term though. In a physical sense what does it mean?

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# Plane Kinetics Moments

Can you offer guidance or do you also need help?

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