Disk

A

initially has a counterclock$-$

wise angular velocity

$0$

$=$

$50$ rad$/$s$.$ Disks

B

and

C

are

initially stationary. At

t

$=$

$0,$ disk

A

is moved into con$-$

tact with disk

B

$.$ Determine the angular velocities of

the three disks when they have stopped slipping rela$-$

tive to each other. The masses of the disks are

m

A

$=$

$4$kg

$,$m

B

$=$

$16$ kg$,$ and

m

C

$=$

$9$ kg$.($See Active Example

$19\mathrm{.}4.)$