<Tr> <Td> Thin cylindrical shell with open ends , of radius r and mass m . <P> This expression assumes that the shell thickness is negligible . It is a special case of the thick - walled cylindrical tube for r = r . </P> Also , a point mass m at the end of a rod of length r has this same moment of inertia and the value r is called the radius of gyration . </Td> <Td> </Td> <Td> I ≈ m r 2 ( \ displaystyle I \ approx mr ^ ( 2 ) \ , \ ! ) </Td> </Tr>
<Tr> <Td> Thin cylindrical shell with open ends , of radius r and mass m . <P> This expression assumes that the shell thickness is negligible . It is a special case of the thick - walled cylindrical tube for r = r . </P> Also , a point mass m at the end of a rod of length r has this same moment of inertia and the value r is called the radius of gyration . </Td> <Td> </Td> <Td> I ≈ m r 2 ( \ displaystyle I \ approx mr ^ ( 2 ) \ , \ ! ) </Td> </Tr>
moment of inertia of a rod about a point
moment of inertia of a rod about a point
radius of gyration
radius of gyration