If we have two coaxial spheres each mass m , and radius r are rotating about an axis ,(adsbygoogle = window.adsbygoogle || []).push({});

what will be the moment of inertia of the system about the axis ,

what will it be if we have two discs ( mass m , radius r ) ?

i think the moment of inertia simply adds , is this right

other thing which is bugging me ? will we add the moment of inertia

in the figure below , all balls are solid and same ,

will the moment of inertia be added here also ?

does it depend on the angle subtended at centre( symmetric system ) , or is it independent of it ?

and what if i just increase the distance of one ball from axis ( increasing its orbit) ?

please help

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# Homework Help: Moment of inerta

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