$*19-32.$

The man sits on the swivel chair holding two $5-1b$ weights with his arms outstretched. If he is rotating at $3ra\frac{d}{s}$ in this position; determine his angular velocity when the weights are drawn in and held $0\mathrm{.}3$ ft from the axis of rotation. Assume he weighs $160$ lb and has a radius of gyration $k_z=0\mathrm{.}55ft$ about the $z$ axis. Neglect the mass of his arms and the size of the weights for the calculation.

$19-39.$ The $12-$kgrodAB is pinned to the $40-kg$ disk. If the disk is given an angular velocity ${}_D=100ra\frac{d}{s}$ while the rod is held stationary, and the assembly is then released, determine the angular velocity of the rod after the disk has stopped spinning relative to the rod due to frictional resistance at the bearing B$.$ Motion is in the horizontal plane. Neglect friction at the pin A$.$