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Disk Y of rotational inertia ly=(1/2)MY(RY)^2 about its center is held at rest above disk X of rotational inertia Ix=(1/2)Mx(RY)^2 about its center. Disk
X initially rotates about its center with an angular velocity of +w0. Disk Y is then slowly lowered onto disk X until both disks are in contact and rotate
together with a common angular velocity. Which two of the following predictions are correct about the angular momentum of disk X and disk Y
immediately before and after the rotational collision? Select two answers.
The angular momentum of disk X immediately after the collision is greater than the angular momentum of disk X immediately before the
collision.
The angular momentum of disk Y immediately after the collision is greater than the angular momentum of disk Y immediately before the
collision.
The angular momentum of disk Y immediately after the collision is greater than the angular momentum of the disk X-disk Y system
immediately before the collision.
The angular momentum of the disk X-disk Y system immediately after the collision is equal to the angular momentum of the system
immediately before the collision.


Disk Y Of Rotational Inertia Ly12MYRY2 About Its Center Is Held At Rest Above Disk X Of Rotational Inertia Ix12MxRY2 About Its Center Disk X Initially Rotates class=

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