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i mean for a spinning dish, symmetric one,

{Total moments acting on it} = Hdot + w x H --- (1)

where H is the angular moment of the dish, w is its angular velocity.

then when i consider that it spins inside a box.

when u lift it and alter the direction, u will FEEL that sth is acting aginst u.

but how it can be quantified by transport theorem?

{Total moments acting on box + dish} = H'dot + w' x H' --- (2)

where H' is the angular momentum of the box + dish,

as well as the w'.

how to put (1) into (2)?... perhaps im not thinking straight

please enlighten me.