Question

Two disks are rotating about the same axis. Disk A has a moment
of inertia of 6 kg · m^{2} and an angular velocity of +10
rad/s. Disk B is rotating with an angular velocity of –4 rad/s and
has a moment of inertia of 4kgm^{2}. The two disks are then
linked together without the aid of any external torques, so that
they rotate as a single unit. The axis of rotation for this unit is
the same as that for the separate disks.

A. The angular velocity of the system when linked together is:

B.How much rotational kinetic energy is lost in this situation?

Answer #1

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rad/s. The two disks are then linked together without the aid of
any external torques, so that they rotate as a single unit with an
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